RDM has a pretty easy rotation, the ability to serve as a backup healer/emergency rezbot (I've had to main heal a dungeon boss when the healer went down and it was pre-Verraise levels), and mobility that BLMs and SMNs can only dream of. That said there is basically zero depth to the class, it needs an animation overhaul (I personally like the Verholy animation but Verflare definitely needs work) and has some skills that just aren't that interesting.