This is one amazing concept. However dying to change the rider would be quite frustrating to players. Instead you could have them to switch riders as a baseline with a long Cooldown about 45 seconds. As a lvl 1 talent you would have to choose wich of the raiders would be the primary leader of the 4. increasing everything he has while the others are less effective, however still usefull while switching( Something near Karazhim's first talent row). The heroics could use a little change as...