I always have my first screenset set up like so:
Master floating in it's own window at far left
MCP docked at left of TCP and sized and set up to work as a "track inspector panel"..
Now here's the thing:
That MCP 'track inspector panel' has to be set by the user to the width of one single MCP panel... right? Fine, BUT diff themes and even diff MCP layouts within a given theme have diff widths... right?
So lets say you have some tracks with one width MCP and others with a wider or narrower MCP... Then that 'track inspector' panel really becomes a PITA since as you select a given track, it may or may not actually fit in the space [width] you have set for the 'track inspector'...
Soooo... my great 'idea' is:
How aobut if reaper could read that pixel width for each given MCP layout for each track and automatically adjust the docked MCP width to that value when a given track is selected?
You see?
Now before you tell me it can't be done, remember that used to be said about putting a man on the moon...