The 2nd job in Dawntrails should be....

[LioJen]

You seem to have overlooked that there have also been a fair amount of job changes that weren't centered around balancing the endgame meta and were simply done to dumb the job down making it require less functioning braincells.

However you did hit on 1 important thing in that they're looking at how an MMORPG should function in the wrong way. FFXI honestly hit the mark of how an MMORPG should be mechanically far better as it provided a wide range of options to players on how to gear and set up their characters for encounters while also varying the areas and encounters in a way that essentially prevented the "1 meta to rule them all" mentality as it could make 1 encounter trivial but another nearly impossible. We'd probably see a fair amount of FFXIV players migrate to FFXI if the game got a UI update and graphical facelift.

I think all you'd need is to combine the subs and launcher.