I'm gonna get maimed for this, but give reisen II the following stat spread:
70/80/60/60/55/105
She's still shit and outclassed, but at least she can do something in-game rather than just be a coupon for a free watasuki sister like she is in vanilla 1.8, and nothing aside from filling up dex space in emerald. (With 430 BST, I still wouldn't expect very much with her movepool, which is more like a move puddle.)
yes it is her stat spread from emerald AE but slightly modified, why do you ask?
*edit from a full year later* nerfed that spread a bit, but in the spirit of throwing out new suggestions... I know this one's been said before, but perhaps give orange her immunity back as an alternate ability for pure power? I dunno how much it'd help orange's awkward case, but it would help the more defensive variants.