Good stuff.
New plants and balance feels on point, although twin sunflower is quite good for how space efficient it is. Puff shroom is also just as silly as in the original.
Apart from that the biggest plus is more PVZ with, I really like the zombie design, the paper thrower, poison and healer zombies change up what needs to be done besides wall and more firepower.
If there is one thing id like its the keep your plants endless, however no idea how viable that is