Already, the "All" or "Nothing" dichotomy is emerging. I went with "Nothing" because I think Bitcoin will have turned in Bitcoin 2.0 or higher by then, and this version will become a dead end fork.
It's interesting you mention Bitcoin 2.0. IMO if a new version bitcoin was to succeed, it would have to be based on it's previous version and allow some form of backwards compatibility or wealth transfer from Bitcoin 1.0, just like with USB - USB2 - USB3. In which case, it could be argued that Bitcoin would still have a value then, as opposed to 0. Unless by Bitcoin 2.0 you mean a totally new cryptocurrency like LTC now, then I would agree with your 2033 valuation though.
I guess one could argue that anyone voting for a nonzero valuation of bitcoin in 2033 is already in the 'All' crowd, as opposed to 'Nothing'. The final price they vote on (assuming it's nonzero) would probably reflect only how prevalent bitcoin would be in 2033 society