If I could move all of Faith & Prayer to VXa, I would. VXa has numerous performance improvements and built-in support for things that I had to get plugins that took 3 years to exist to do (Unlimited autotiles, looping oggs).But the key issue is, Essentials was made on XP - before VX was even a thing. Porting Essentials to VX is also a nightmare task, because XP uses RGSS2 for it's scripting language and VX/VXa uses RGSS3 instead. Scripts would be incompatible, and basically needed to be rewritten from scratch.