Hey I'd be fine with a 5 MB block size limit, and some percentage increase every year afterward. I think 20 MB would probably be better, but that's far less important than putting in place some dynamic hard limit, ANY dynamic hard limit, that steadily increases, year by year, so that we never have to do a hard fork again to change the limit.
Should we need a stricter limit in the future, it should be done through a SOFT FORK, with >50% of miners enforcing it. Static hard limits are dangerous, and should not be the way Bitcoin controls bloat.
I agree with the goal of never again having to do a hard fork to change the limit, but am not sure if linear increases are appropriate for a system that could grow geometrically.
Could you support starting with a 2MB cap that then doubles every year?
I'd might be OK with a 5MB cap that doubles when the block reward halves, depending on how it effects TOR/DSL users.