I'm totally done with large chain rings on my trail bikes; I just never use such high ratios and appreciate not having a "buzz-saw" near my right calf.
The issue is what do about the low ratios and this is very dependent on your bike performance, power, endurance, ride duration and what your hills are like. I can cope with 32/11-34 (9sp) 99% of the time on my HT because I target moderate grade climbs like you get at trail centres e.g. I enjoyed the combined red/black at Brechfa on my Sov with this setup. It's really on repeated/long/steep/tech climbs that I conk-out, and these I can mostly avoid or just push the worst passages (which I don't really mind).
I'm reluctant to lose low gearing (the granny) on my big-day-out FS bikes because after 5+ hours riding, I've only got energy left for twiddling. As an aside, the new clutched mechs are godsend for 2x/3x systems, sans chain-device.