All skill trees are is an additional grind (ohoho, people think MMOs are free of grinds right?) when in reality XIV's auto leveling into skills is the exact same, you're just not grinding to level 1 skill in order to unlock another branch of skills, then to power them up. Skills scale with level in XIV as is, so a talent tree would be kind of redundant.

With the addition of Jobs soon, it is a fair bit redundant to want this kind of system ontop of it. Also, no stats don't make "a little difference", no one's gotten down the stat caps and diminishing returns yet since we have base stats of 200+ which means you need a lot more bonus stats to see a real increase versus in FFXI where you had 80 STR and + 140 str in your WS setup that showed an obvious difference.