Alright. That's a reasonable reason. I can respect them.There are way too many opportunities for a troll to abuse this kind of a feature. Allowing people to use their own custom image for a pokemon is just inviting them to use something inappropriate (sexual, gory, etc). The same goes for the custom cry. On top of that, I feel like this feature would undermine the CAP project in a hurtful way. Why go through weeks of discussion and voting to create one pokemon when you can create one yourself in 2 minutes? I just don't see any benefit to a feature like this other than "it would be kind of fun".
Buuuttt a work around for the trolls would be, like i said, make it a thing where you have to send requests, not random opponents, and it even brings up a warning message before you can accept saying (Warning: people are scary and can put whatever they want. May include inappropriate content, continue? [Yes] [No]. And for the CAP pokemon... that's a fair point, it would be disappointing for them, so IDK.
sorry it's just this is our only chance at having good custom battles, unless we wanted to pull up calculators and math out the damage every turn... ah well.