DCUO also has this class but for FFXIV it would end up being a class/job like FFXI RDM was played, refresh, sleeps, debuffs, cure bitch. We already have blm with aoe sleep, whm with single target sleep, brd with a bind or 2 and a few other snares, stuns or silences/debuffs from other jobs. All the bases of a controller class is covered.

I loved playing mental controller because I could pump out serious damage while CCing mobs, refreshing my group's power and looking totally badass!