Seems like you could stay in the 50 ring all the time. Why even go to the 34 ring, except for a significant hill?

With 10 and 11 speed cassettes and their small steps between cogs, what the world needs is a FD that will shift between 55 and 26 rings, a chain flexible enough for cross-chaining, with electronic shifting that allows purely sequential shifting. Then you could run 55/26 x 11-23 10 or 11 speed. Huge gear range, no overlap, adequately small steps for commuting, and simple "up down" shifting.