Are you guys talking about straight references?
The reverse references from global variables and stopwatches were already implemented
Jamie added the improvement, blue grayish color for AB and sorted by categories
These are helpful because they don't have any other quick navigation paths to the referrers.
On the other hand, in my opinion, I don't think it would need to refer the straight way because a macro tends to contain multi ABs and it could check easily just entering each macro editor screen.
More information in the macro list makes less rows of macros. That's a tradeoff. Even if it has the enable/disable option like Show macro details in the top right ... menu, do you use it so often? Probably I leave it invisible, just unticked. If implemented as a toggle button next to collapse/expand, it might be better to do, but I would use it very few