root cause...ha! the darn plane is big and you better be ready for such things to happen.
encroaching on a taxiway...hey, if you stop, you are entitled to be there unless you hear something like: get out of the way comair, air france is doing warp seven towards you.
many changes will be made I'm sure. But it will all be ''back to basics"...taxi no faster than a man can walk (sure, add ten minutes to scheduled block time!). If you are unsure of wingtip clearance, STOP and make sure.
At some point, airplanes get too big or airports get too small. Which is easier to change?