<< So for the purposes of making 2D drawings it's good for dimensions to be placed with some care and it's not great to try to make it really easy to stick anywhere in 3D space even though that would be fun for playing around with them.

I can understand that...and there are another play tools for play with that! :)

And if i want really 3D dimensions i can use the CPlan and the 3 views so not a big deal... ;)

A funny one : the measure tool has it's own 3D Gizmo (of course this amazing free Twinmotion) :)
Funny to see the automatic measure following different rotations of the Gizmo along the altitude's variation of surfaces!
...and the jump from volumes to volumes like a laser one!