I was a big fan of the delta species pokemon back since they first appeared in the TCG and I have considered it but I've found that a lot of players prefer the game without too many gimmicks. Once XG is a bit more complete I'll probably look into making different variants and I know many people are eager to make their own modifications so hack tools are on the way.
I replied in the other thread. I hope it helps!
I'm glad you like it!
I'm working on creating some hack tools so that it'll be easy for any to make their own modifications but I'm a bit of a n00b at this kind of stuff so it'll take require a little patience