Will 8.0 Expansion Cap @ L55 ?

[Valor_C]

Personally I would stop the levelling at 100, and replace it with farming skill points that you can exchange to unlock new optional actions which replace existing ones, allowing you to customize your job's aesthetics and playstyle. Giving players options like this would also help to alleviate the problem of divisive job changes.

That's not a bad idea in itself, but there will be one meta build for every job, and people will be excluded from endgame raid content, or maybe even other content when they don't play that one meta build, which then makes the whole thing irrelevant and a waste of resources.
That maybe works in other games, but I don't trust the FFXIV devs to design it in such a way that there won't be that one proper meta build.

edit:
Look at bluemage, a lot of different skills which let you customize your build how you want, but good luck in finding groups for bluemage endgame content when you don't play with a certain build.