kill the beam you kill the team. i don't care how good the dhc synergy or mixup synergy is, they fall apart if you start snapping in their only good assist. the neutral on both of those teams is really bad, its just they're both godlike players.
But that applies to most teams anyway.
Snap in Ammy on Zak's team, Firebrand and Dorm are dead weights without a good assist.
Snap in Magneto on WVM, Wesker and Vergil are without a beam. Same for the MastaCJ team.
Snap in Akuma on a Wolverine team, Wolverine has limited mix ups and rushdown capability.
Snap in Sentinel on Fanatiq's team, Magneto and Storm without good a assist for mix ups and neutral.
Besides what the hell are you going to do snapping in Taskmaster or Thor on their teams? It's not like they are low health characters you need to finish them off with at least a reset or high resource drain. That is totally not worth the initial snap back especially if that means you have to deal with a dark She Hulk or a dark Spencer later on. You only really snap in low health, assist + anchor characters as the snap back basically pays for itself if you get the hit in.
The neutral on the team is basically dictated by their horizontal assists which is good enough in the game. At the very least it keeps Hidden Missiles and Drones in check some what. People have done better with worse assists in the game.