People saying that people would only play the cookie cutter build because of dps is equivalent of saying that people only would play BLM and SAM because of dps too.
I like to think that XIV's players (unlike Wow's) understand that there is more to balance than raw dps, otherwise nobody would play DNC or RDM. Even is Wow's post Pandaria crippled talent system there was room to pick between the best dps or ease to use, I know I chosed the later more than once since I never intended to do mythic raid tiers.

Than being said, I wouldn't like that kind on system on XIV, because suddenly devs not only have to classes, they gonna need to balance abilities within the class and it would just clash with the jumping rope style of the encounters. Also ESO and GW1 exist and are living proof that give too much options to players can be a mess.