On the rotation degree and movement amount setting is it possible to make them respond to mouse wheel when pointer over rather than need repetitive clicks.

When a block has focus is it possible to use arrow keys and axis key for movement. So like press M then hold XY or Z then up or down arrow key to move in the posiitive or negative.

I find dragging is a little imprecise.

This could also work for scale with Press S and hold XY or Z and up and down arrow used to scale in the positive negative.

And of course rotation Press R when block is focused then hold XY or Z and up or down to rotate

You could also add RS and M or their symbols as buttons to GUI

And BTW love the software I made a toy train and carriages on tracks in 10 minutes. Well 30 actually, I spent first 20 minutes working out controls :-)