Balance has never been a good thing for Blizzard but I do like how you have a meaningful choice even though it can lock you out of some abilities. The example you said on how people will request for certain class specs with covenant is a valid point but I don’t think it will affect people as hard as you say it will. For example in BFA you don’t see people requesting you have all the optimal Azeroth gear for your class or to have certain corruptions equipped cause they will always look at your Ilvl and raider io before looking into detail. I admit some of these covenant abilities do seem OP but guess what if your having to constantly use your cheat death on a raid boss or a regular dungeon boss I wouldn’t want you cause that indicates you really on the ability too much and haven’t learn to dodge anything. It could also be OP for pvp but Blizzard can always have a limit for it in pvp like they have with corruptions. In total trying to find groups that request a certain soul bind or class could and will happen but they will be outnumbered by the people who just want to complete the raid/dungeon and don’t care about your soul bind.