From what I've seen of the game so far, the animations look pretty neat! Definitely pretty positive on that, the artwork on the game over scenes and the pixelart is especially great.
That said, I feel like the ways in which it tries to be different are kind of the wrong ones, and don't really do a good enough job at that. You should absolutely be able to do something similar to PvZ, but I mean, come on; the plants are identical, monster types are identical, certain SFX are straight up from PvZ, and even the minigames are identical. Where it differs so far kinda makes the experience feel worse; the lack of a lawnmower equivalent is somewhat harsh (not even kaizo-tier PvZ mods remove them), the more compact map doesn't feel right in terms of pacing, and it doesn't feel like you get enough time at the start of the stage to set up a decent gold economy. While the animations on unit deaths are a good way to have more lewd content than just game overs (that's honestly been my pet peeve with femdom games for a while), they also mean that, instead of being able to quickly swap another unit back in, the slot's just locked out for a very noticeable time.
I know this post is gonna have a pretty negative vibe to it, but don't get me wrong, I think lewd PvZ can definitely be an interesting concept that can work well. I'm just hoping that as you continue to develop it, the game will find some sort of unique flair that helps it stand on its own. Definitely looking forward to the progress!
I'd also recommend possibly exploring some different BGM repositories; as cool as Kevin MacLeod is, admittedly the tracks become a bit distracting the more you've heard them in different media. I'm not sure what the situation is for Western ones, but here's some Japanese ones I would definitely recommend (all of them should be royalty-free and be cool with lewd games):
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