>>45134860Thinking about the concept more, it'd probably be easier to rationalize it as
>base forme with lowest stats>after reaching a certain requirement like level it becomes Wolf/Eagle/Otter, automatically picking one based on something like IVs or EVs>each forme has the same movepool and you can switch between them like in TPDP using an item, picking what you need to suit your battles instead of raising a whole new 'mon for a particularly tough boss>EX formes are rare and act as permanent "evolutions" from thereI think it'd be simplest to give any non-EX puppet the same sprite and use forme changing code to handle the different stat sets; I think the Polished Crystal engine can handle this already and all that would really need to be done is implementing something in the stat screen and battle HUD to show the form (and replace that symbol with EX if it's one of those).
>plotI think it'd be novel to take an isekai setup like other Touhoumon hacks have used, but instead of landing at some neutral place the player ends up at the doorstep of Moriya Shrine and the gods there immediately start using the player for their own ends; essentially a Touhou game where (You) are the incident. It'd provide a lot more reason for various characters to get involved than the player just exploring Gensokyo for their own sake, whether it's the mountain gods telling you to go somewhere or someone else getting involved because of your past actions.