Allow us to make the basic shapes smaller.
It's hard to make certain details look good because of the .5 limit.

example;
I tried to make an aquarium in my house with fish inside, the fish looks kinda weird due to the inability to make small details. (I know in the pic they look silly, but i'd really wish I could make more details on them)

The benefits and usecases would be for the many talented builders in the community. Just imagine what new and amazing builds they'd be able to create with more freedom of the shapes.