I’ve been thinking about removing the handle on mine for something better, definitely not the greatest.
I’ve flown with my 7U 84hp Intellijel case many times and my Pittsburgh Move 104 a bit before that.
I ended up with one of these Roland gigbags, can fit a lot of stuff but it’s a bit unwieldly, but has worked for a few trips. I once overpacked it so much that it didn’t fit in the overhead haha, but I was able to put it on the floor next to me.