True, I had forgotten about Beast, but I covered for it as well. That and Beast types aren't thaaat common (I know there are plenty of good ones, though!), and, most importantly, Beast-coverage is only rarely used, and is usually predictable when a mon does have reasons to use it.
Hmm, I think Pain Split and Resttalk do happen to be good... Pain Split is obviously not nearly as reliable as other forms of recovery, but I think it's more than enough to distinguish a wall from a bulky attacker with the same stats, and it's convenient both due to the fact of being able to hurt the opponent and because it's an one-slot (unlike Wish+Detect). The main problem is that it's a little prediction-reliant, but DParsee did force switches when I used her due to the heavy statusing, so it was an okay bet.
As for Resttalk, it's less reliable in that you're forced into random moves for two turns afterwards (meaning it's difficult to Rest two turns in a row, for example), but Rest does tries to compensate for it by recovering 100% of the user's HP. Resttalk also offers the advantage of turning the user into a status sponge, which is a definite befinit: there's not much point in having a move such as Recover if you're left vulnerable to Toxic. And if you're in an emergency, you could always switch out after Resting, then let a cleric heal her sleep condition, for example - though that never happened to me while I was playing this team.
All in all, both moves definitely have their disadvantages, but I've run both of them successfully often in a few different mons (Pain Split is heavenly on DHina!). They're forms of recovery, just like any other.
As for having no offensive pressure, Yoshika and DHina don't have offensive pressure either, and that doesn't mean they're bad. ~.~
DParsee has been useful for me with her dual-status ability (and both do damage the opponent), while Signal Beam does its job when needed. The problem is DReimu, who has to rely on actual attacks off not very high base stats, and a not-very-consistent movepool... she does get Whirlwind, though, as well as Silver Wind and CM if need be. On mine, I used Cross Chop mainly to crit abuse; Revenge is also an option, given her naturally low speed.
To be honest, I haven't really played them exteeeensively, but Night Shade DParsee could check AdReisen, for example (resisting manabeam and having even a 0.25x resist on one of those is honestly no joke), switching into a Luster Purge taking only 8.03 - 9.41% damage before Leftovers. And assuming AdReisen's carrying EBall:
252 SpA AdReisen Energy Ball vs. 0 HP / 252+ SpD DParsee: 154-182 (42.65 - 50.41%) -- guaranteed 3HKO
...if it hits. As for the subs, she can take care of them. It's likely that DParsee will be left weakened afterwards, and this is honestly theorymon, but there's a good chance the opponent will switch out when AdReisen is low on HP to try and preserve her as a revenge killer, giving you a chance to Pain Split a full HP opponent.
DReimu resists both of AdMokou's stabs too, and isn't weak to her coverage moves (she doesn't have beast punch, now does she?), but will likely have trouble against her if running Cross Chop. Silver Wind or Force Palm could force AdMokou to switch out, though. (Come to think of it, DReimu has an interesting option in Revenge as well.)
Another relevant example:
252 Atk Youki Draw The Line vs. 0 HP / 252+ Def DReimu: 97-115 (24.8 - 29.41%) -- possible 5HKO
+2 252 Atk Youki Draw The Line vs. 0 HP / 252+ Def DReimu: 195-229 (49.87 - 58.56%) -- 69.53% chance to 2HKO
It'll hurt a little, but DReimu can switch into Youki risking a Swords Dance, then Whirlwind and Rest, or attack with Cross Chop/Revenge if he has been damaged before (Revenge is a guaranteed OHKO with one layer of Spikes). If he doesn't SD, he can't break through her, giving her time to attack. In this situation, switching out would actually be wise for Youki, which, in turn, gives you an opening to scout and stack Spikes damage with WW.
Superpower Yumeko, if running 252 ATK and Adamant, can be a little dangerous to DParsee; however, Parsee can just switch in, then burn her and Pain Split or attack afterwards. After Superpower + burn, she'll be forced to choose between switching or death, and that's only if she happened to run Superpower. Yumeko doesn't usually run Lum, either.
252 Atk TAya Brave Bird vs. 0 HP / 252+ Def DReimu: 130-154 (33.24 - 39.38%) -- 15.23% chance to 3HKO
0 SpA DReimu Silver Wind vs. 0 HP / 0 SpD TAya: 162-192 (55.67 - 65.97%) -- guaranteed 2HKO
I don't remember how many ATK EVs TAya usually runs, but I do know she usually runs Jolly rather than Adamant. I didn't bother checking the A rank, but it shouldn't go too differently.
Well, other than that, I don't know? I'd like you to point out the C-rank mons who outclass these two, since I could compare movesets and adapt to them if they really do happen to be outclassed (like Yuugenma is by DHina, which forces Yuugenma to run Disable to differentiate himself), or just conclude that those two straight-out need a buff and no questions asked... though I think the later is a bit unlikely.
What do you think about Ellen? I honestly hated Hemo's idea of taking Natural Cure off of her and giving her Spring Charm instead... I know Spring Charm makes sense on her, but so does Natural Cure. I mean, did she need a nerf or something? Why not just give her Spring Charm instead of Own Tempo, then keep her Natural Cure so that she can do something that Lily White can't do?
The advantages Ellen has over Lily are Burn Powder, a slightly better defensive type, higher special attack, a slowpass possibility and a gimmick jampass strategy (am I the only one who thinks jampass is gimmicky?...). On every other aspect, though, not only does Lily outclass Ellen, she actually humiliates her. Wish+Detect? Lily can do it. One-slot recovery? Call Lily. Actually use Spring Charm well? Lily can even resttalk if she feels like it!
Meanwhile, there are better slowpass users around than Lily (she'd have trouble slowpassing against something with 60 BSpd or less), and Lily doesn't really miss the special attack considering she can just status, Encore or recover forever anyway...
And again: no matter how low you think of the mons ranked in D-rank right now, I still think it's unfair to categorize them the same way you classify Tori, Reisen II and chibis... those aren't "not very effective in the current metagame", they're simply OHKOed by even DReimu in the current metagame. '-'