Though availability aint so great on LY either. My father-in-law is thinking of switching to UA. A nice benefit of UA is that there's expanded availability for Premiers. So while a lowly Silver might have more availability of standard Y awards, GS have expanded availability of saver F (and obviously a sliding scale in between). Not to mention that miles don't expire as long as there's any activity on the account (otherwise 18 months of non-activity).
Native UA availability sucks also. The Star alliance side of things however, you can usually find something that works.