I've been a long time fan of Summoners throughout many FF games. I'm ok with the current implementation. I really have no idea what all the fuss is about. Does the size of the EGI really ruin people's immersion so bad that they forget they are playing an FF game and think they are a Warlock in WoW?

EGI is not a full on Summon. There is nothing to compare to previous games, because EGIs were not used there. You summoned Ifrit himself, not a fraction of Ifrit's power. It is the only way to make sense of it in a world where you can have potentially unlimited numbers. There is only one Ifrit, you can't have multiple people summoning 1 guy. Hence the EGIs.

I am content with the implementation, their look, size, functional and your ability to control them. DoTs are not the typical wheelhouse of SMN, but I think the implementation is good, and I enjoy it, more than any other DPS class.