Summoner would not work with FFXIV current state.

[Kilta_Firelotus]

Summons have to be out permanently, and summoner has to be the most powerful damage dealing class in the game. It was stupid in FFXI how you would pull out this awesome avatar, to have it hit for like 7 DMG.

I agree, you went through hell to get these avatars. either doing it as a solo lvl 20 smn with just carby. Or doing prime which at first required 6 ppl. plus doing them all again for feni then, killing diablos twice.
Kinda sad all of these ended up weak the mp cost to cast plus the mp to keep them out was stupid. You had to build the avatars tp to really deal good dmg with their abilities.