Hard fork to 2MB, and then immediately start screaming about the next increase to 4MB in ten years.
NO, you add an automatically adjusting blocksize to leave less management into human hands.
Humans are corrupt, and greedy, the only way to solve the block increase is to make the code automatical, to not rely on infighting every 4-5 years.
If you define 'automatically' = adjusted by the free market = Austrian economics type
Otherwise there is a BIP from sipa, adjusting by some 'magic rules' in code derived by extrapolation into future....