Trying to get Iron Man’s blue to work can be a fun one, too.
I most often see the completely Fortified match thing with C4ge. It’s pretty common to end up with a bunch of Fortified black Protect tiles with him, so they get double-matched like that often enough that it’s definitely a thing.
My favourite Fortified tile exploit, tho, is using something like Yelena’s or Bullseye’s black to end up with a Fortified critical tile. That tends to lead to pretty ludicrous cascades.
You’re right…we do need to add the LOL button back. A fortified critical tile is something that had never even occurred to me, but now I must attempt to get one!!