One of my issues with this game was that the jobs being locked into only three roles made for very repetitive gameplay if you play this game for an extended period and it would also be a detriment to a job when it finally got in because limiting these jobs to these specific roles and balance of said roles would undermine the abilities they had in the past games and traits that made them unique and fun in the first place.
I would love to see this idea fleshed out even more so, maybe even have stuff like an alternative Summoner down the road, Puppetmaster, Beastmaster, Dancer, etc.
All in all... Thank you, SE for listening to us FFXI players. It is much appreciated.