Some way to automatically open MBE for new tabs *if* there's multiple buffers

[wolftune]

Lets say I open the same buffer in two tabs. I don't need MBE to show then. Basically, I like that MBE doesn't show when there's only one buffer (regardless of the number of tabs). Thus, I don't want to make a setup that would open MBE any time there's a new tab.

That said, what I want is to have an absolutely persistent MBE always shown whenever there are 2 or more buffers. Currently, regardless of number of buffers, if I make a new tab, it does not show MBE unless I manually get it to show. I hope this can be fixed so I can have a setting to always see MBE with 2+ buffers on all tabs, new or old, with no manual invoking.