This looks very gorgeous! I love all the little effects you added such as the sunlight/shadow and especially what you've done with the water! So far, you guys have definitely got the art style down.
I've always been expecting someone to make a game based around how the anime version fought. Like actually controlling the Pokemon and executing moves that would have different uses in its situation. This would totally open up new strategies and allow some underpowered moves to be used.
And in mechanics, I suggest to remove the PP system and add in a new "fatigue" gauge. Every move would lower the gauge by a certain amount, and the gauge will be slowly replenished over time. This can let the hasty players spam up their gauge, while the more strategic ones take advantage of this.
All you really need is to keep the artstyle and anime-style fighting and this can really be a unique project.