Replying to Back-mounted bindings

Hey I asked this a few weeks ago and got no reply. What disadvantages are there of mounting way back? Im 2 or 3 back from steeles i think, I didn't mount them myself. But its noticably diff. from last year. I ski on vertigo motion G4s, dont ride switch very much (just outta 5s, not good enough to throw switch) and ski mostly pow. Im heading to SLC on Friday, Alta is getting dump after dump, and wanna make sure I am not fucking myself!
Thanks