The current default effects can get really annoying if you like to linger a lot in grassy areas... Even just a config option to limit it to ferns/grass/flowers would be pretty nice.
Ideally, the ability to set a list of blocks to look for/replace with would be cool, as well as perhaps weighted chances, maybe also add an option to grow tallgrass on grass blocks.

I really dislike getting spammed out by melons/pumpkins/growing trees 👎