With something like the titan issue it is easy to see how it can be frustrating since that move pretty much is a game ender for you input in the fight if you are hit by it.

I do think that if they are unable to find a way to make up for peoples latency for that attack then the best they can do is make it a move that just pushes you to the edge and leaves you with 1 HP while binding you. When hit by the move you are invulnerable for 2-5 seconds giving the healer enough time to recover the one hit by it. At least then there would still be a sense of danger without removing it completely, the person hurt would need to be healed causing MP to be used on another target, but it wouldn't outright end the fight for those unable to dodge it due to latency. In a sense the push back move would become similar to the way the plumes are in the Ifrit fight.