i for one, would like the in-game/mod ability to move the camera so that as a dwarf when mineing we can look at the roof from under the ground, so we can mine those hard tor each parts easier 
Definitely needs to happen.
Oh yes.
That, and more accurate slice tool. It’s hard to dig layered passages (especially from bottom to top, for example, in mountains) when you can only slice every 5 blocks.
Added: Another suggestion. Change X-Ray view such that in “full” mode we could see the ceiling of a tunnel (and dig into it), and in “flat” mode it was hidden (and we could dig downwards).
i remember we had the custom text ability for slice toll (want number 16 slice? then type) etc… but not now… unless that was dream lol