F2P, grinding

Hello guys!!! Well, I'm really enjoying PvZ3, however, as a F2P player, I'd like 1 thing to change in the game. EA, for real the grinding system is soooo slow, like, I've had to grind for 1 week to unlock one level 2 evolution, not even a level 3, the game has a huge potential, but  you guys can't make it as a impossible game, after level 64 it is almost impossible to finish the level if you don't buy things in the game. Also, I think that levels shouldnt be random levels. That's it, the game has huge potential, so please, listen to the community