@AlW I guess I didn’t explain that very well.
I’m just wanting it to represent the Most Recently Used tools. The problem is that it that only considers tools used if they are used from toolbars other than the MRU toolbar.
The way it is, you can push one of the buttons in the MRU toolbar 1000 times and it will still end up at the end of the list and fall off when you get too many items in it, even though there are buttons that don’t fall off that you only pushed once.
All I am trying to say is that if when you click on a button in the MRU toolbar itself, it was repositioned to the beginning of the MRU toolbar, as if you pushed it from its native toolbar, then the things you use the most would always be at the beginning of the MRU and will never fall off.
This would make the MRU truly show the “Most Recently Used” buttons, regardless of if they were pushed from the MRU or the original toolbar.
Right now, it is really the “Most Recently Used buttons from their original toolbars” but it does not represent what buttons you use the most, if you use buttons from the MRU more often than their original toolbars.
I have my MRU arranged Horizontally:

every time I use a button from a toolbar other than the MRU, they all shift to the right and the new one is added on the left. here it is after using 3 other toolbar buttons

you can see the ‘Move’ button that used to be on the far right is gone now. even if I pushed it 100 times between after I used the ‘Rectangular Plane’ now I have to go find it again and it will be back on the left.
but if buttons I pushed in the MRU itself were repositioned back to the left of the toolbar, the same as when I push them from the original toolbar, then what you use the most would always be there.
for example, if I push the ExtendSurface from the MRU tool bar, it should be moved to the left:

note that I had to push the ExtendSurface button from the Surface toolbar to get it to move to the left… Pushing it from the MRU itself should have also done this, that way what you use the most will always be at the beginning, even if you push a bunch of buttons to fix something, then go back to your normal workflow, the MRU will truly represent what is Most Recently Used… no matter where you used it from.