I've been playing this since yesterday. My Charazard is already level 100, and I cleared about 200 stages. It is a very enjoyable game, but I wonder how long it will be up... After all we know what Nintendo likes to do with pokémon fangames.
Yeah, I don't know if another copyrighted set is a good replacement for when you get taken down. See, if you just replace it with another set and you get taken down again, you can be seen as a repeating offender and get a higher penalty. The back-up best be an original. Luckily there are so many sets of graphics available which you could use.