Nay. Going straight to 20MB is a huge change, and too risky.
I think besides dangers to decentralization this might kill off alternatives like the Lightning Network. And yes I know the LN would be awesome even with 20MB blocks, but the necessity for it will be reduced.
I would agree to a modest, conservative change, maybe over time and/or coupled to indicators like difficulty. Enough to survive, little enough to drive research and implementation of alternatives. But this is too much.
Not like my opinion will count much, but I will reduce my stockpile appropriately if I see reckless behavior.
-coinft