FPS boost by deleting "grass" blocks

[Noxulous]

my idea is simple, take the grassy dirt blocks and give them a degradation block change when you punch them, and make that degrade block drop plant fiber, and just remove all tall grass blocks from the game. make the grassy dirt blocks adjacent to any plain dirt blocks cause them to regrow the grass on the plain dirt block over time, the same way minecraft does its grass growing thing. this should represent a massive improvement in FPS for the game.