In most FF games summons were actually far worse than actually doing pretty much anything else.

So...if thats what people want, then whomp whomp.

Storyline wise there have been a few summoners but they were always tragic heroes that had to go die or were maidens in distress or what not (Terra is a slight exception, but not really).

Not many guy summoners.

Also also, summons were mostly used to tank in later FF games (10 and later) and in many they were just bad, bad. Flashy, but bad.

So I'm not sure why anyone would want that. Flashier graphics? Sure I'm all for it, except until you realize you can't see any void zones. Being more egi-focused? Hell no.

And there isn't a summoner in the series who isn't just as powerful or more so doing things other than summoning.