I have no problem with the traps in the other parts of the game. The big one in Cabal is hilarious even when you get killed by it. As aggravating as they can occasionally be, they can be dealt with by means other than "bring a trapper".
But I've completely had it up to my eyebrows with spell traps.
They sit in the middle of narrow hallways so they cannot be avoided. They pulse continually so you can't time them. They inflict a totally unavoidable slow effect that gives no save and ignores freedom of movement (a spell which explicitly states that it should be protecting you from this exact kind of thing).
Something needs to give. I'd honestly be happy enough just letting FoM block the slow as it should be doing. But making them less obnoxious beyond that would also be quite welcome.