If base classes don't work at end-game ...
What's the point of having so many classes then?
Not to mention their lack of viability is not 100% due to their class design. If I'm right, there is a stat boost involved when you take a job and jobs have better gear choices - i.e. not helping ...
Class vs Job was suppose to be a trade between flexibility/versatility and specialized unique actions. No?
Tell ya what SE, let Summoners summon Carbies in addition to the elementals - just rename the spells to summon the elementals to "Summon <Elemental's name>" ... etc. Done.
PS: I would post on the official forums but ... "Temporary Session is invalid. Please try again."