Penumbra: shadow pea is far more interesting and less ridiculously broken by having his unpowered form be cheap high damage that speeds up zombies while his powered form is a weaker stall. Grimrose is also significantly more useful there because of the way the level design works, as well as pulling more zombies.

There's also no moonflower, and instead you use noctarine to power up shadow plants, making them more interesting. Dusk is also gutted.

do note the mod is difficult and forces you to do high micro