Hello Dafarkias,
So I've found an interesting thing with v0.63 regarding the gap between the green squared area and the actual arrange view display issue : in fact, the issue is not about that, the shift is all about track's names. Take a look at this screenshot :
Capture d’écran 2019-10-24 à 07.21.21.png.zip
The arrangement view and the green squared area are perfectly "in phase" but track's names are weirdly off.
Also, regions and markers are still missing.
As for the new RmB and mousewheel function, it's quite nice ! The problem is that people using trackpad or touchscreen won't be able to use it as it is. Maybe a solution would be to go with a mouse modifier key ?
I've got suggestions for some additional features
It could be nice to be able to customize the square color and / or its thickness. I use a lot of green for my tracks coloring so sometime it's hard to see where the square is ^^
Something to highlight selected tracks would be neat. Maybe something like this thing I did a while back :
https://forum.cockos.com/showthread.php?t=186224
On top of that, an indicator for the edit cursor position and maybe the play head could be great !
Hope it helps