What feature do you want to see added?

I would like to be able to use the fill-down brush to a certain height,
this is useful for when I make builds in the air.

Command format: /b filldown y (height)

The default fill-down height is -64

Example:
/b filldown y 100
If I use the fill down command at anything above 100, it should fill down to 100, anything below that will not work

Are there any alternatives?

Since the fill-down brush just fills until it intersects with another block I used a flat plane.
But sometimes It will reach outside that plane when I work on the edges of the map and it will fill down to the void.

Anything else?

No response