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Uhh POTW and NBT should always use different pokemon in my opinion. While it brings additional focus to that mon, the two projects are too similar. I don't know what to suggest either haha, but consider doing like a mega forme.
I was thinking of doing Kyurem. It's been in a RW and NBT and it would really help for there to be some kind of relationship between the projects. There's bound to be something good coming out of giving a 'mon extra attention! Plus, NBT is more about movesets while POTW is abt the pokemon itself.