I've never really found it to be an issue as a DRG. Of all the moves they employ in their skillchain, only TWO of them require positions (HT and ID). The rest can be used from any position.

My beef with positionals is that it's sometimes hard to tell which direction the mob is facing. Yes, yes, I know, you can either just use visuals, or go by the big target circle under them showing which direction the mob is facing. But throw half a dozen mobs on top of each other, and add in AoE effects, and good luck.
That's the biggest annoyance for me, really.