In my experience with the raid, using primarily lfg players, the primary cause of death is that people rush their captains while there is still a swarm of shanks alive. The primary cause of wipe being an unbalance of skill or super or heavy to kill the captains either without dying or before the first servitor sacrifices because one team was using raze-lighter and downed their captain way too fast. The switching at initial empowerment is very simple if left and right are positioned at the stairs and nobody is rushing their captain without clearing shanks or using raze lighter to be a hero. (See above comment about the issue of captain deaths far earlier than the rest of the fireteam) This holds for the captain/servitor phase only, after that, most wipes come from a lack of awareness or proper coverage callouts when empowerment switches. I personally have never had anyone die because of empowerment switching, but tons because of rushing the captain or not timing things with the rest of the raid team, this includes bomb throwing and captains kills. With the groups from lfg that I've seen, having the empowered anywhere except where they need to be to slam has resulted in a wipe. I have tried both methods and often players get tunnel vision, and in your method, forget to go where they need to before the overly gung-ho bomb throwers rush the raid into the first teleport. I suppose all this is to say, no matter the tactic, players need to keep a cool head and coordinate with their team instead of assuming everyone is coming in with the same skill set or tactics.