I like playing support role, but I won't work well in FFXIV
If a support role is a must for dungeon run, the time wait to form a full party would be quite long, nevertheless it will lengthen the dps queue time which is already bad enough
If the support role deal same level of damage as other dos class, we have a balancing issue, support class will alway be a favour over pure dps, if we lower the output of support, who would take a support to dungeon
Furthermore, the support skill in FFXIV is kinda lacking, amost all class have some utilities they help party progression, and what BRD and MCN left is only TP, MP regen, which I almost never ever use them in dungeon, even the 24 ppl tower I have never use them
The whole FFXIV 2.0 system was build base on trinity, and it is very unlikely to change