I seem to recall using a system in the 90s/00s where the menu bar was dynamic-- based on where your cursor landed, it changed. I think it might have been the A

I seem to recall using a system in the 90s/00s where the menu bar was dynamic-- based on where your cursor landed, it changed. I think it might have been the Andrew system - https://www.cs.cmu.edu/~AUIS/ https://www.cs.cmu.edu/~AUIS/ - but given it hasn't been touched since 1997 judging by the datestamps, I'm guessing it won't be an easy apt-get to experiment with.