I think having an egi swap mechanic when you use enkindle would be a great idea. It fits with the current summoner dynamic, and allows for each egi to be viable in battle. Maybe place Enkindle on a 30 second cooldown, to line up with swiftcast, and then each summon 1-6 i guess, have a 1 minute cooldown after using enkindle. This would prevent you from spamming enkindles over and over. But for this methid to work i would think enkindle should cost MP, but then the total MP count would cost too much. But yes i can see an egi swapping mechanic working, and making Summoner feel more traditional, at least to all the nay sayers, lol.