It would loose microtransactions at the very first. And does it need them? I think not because they bloat it up ad infinitum!
A large portion of transactions now are micro transactions, and they haven't bloated the blocks.
Fees will never be enough for miners if you keep raising blocklimit ahead of demand and only on basis of a guess about the future. What if the future predictions doesn't come true? Then you are stuck with a coin that doesn't produce fees at all and miners will be forced to form a cartel.
Miners have the choice to quit. As I said earlier, once mining becomes unprofitable, miners will quit. That of course may lead to greater centralization, but only because of bandwidth issues. Even with 20 MB blocks, most people have enough bandwidth to support that size, and by the time that the size is reached, bandwidth should increase enough everywhere so that almost everyone has enough bandwidth. It is not a guess either. The prediction is based off of historical data of block sizes and the growth rate. Eventually, within a few years, this scaling problem does become an issue.
YOU JUST DON'T RAISE BLOCKLIMIT AHEAD OF DEMAND BECAUSE THAT'S EXTRAORDINARY STUPID THING TO DO. IF YOUR FUTURE PREDICTIONS TURN OUT FALSE IT'S RUINED!
Having a plan for a future condition never hurts. He is planning this way ahead of any possible maximum of the block size. This allows for a smooth transition. The code is written beforehand, bugs are worked out beforehand, and the change is not a rushed panicked thing that scares the crap out of everyone and causes a loss of confidence. By doing it now, it mitigates some of the negative consequences of doing it in a short time on short notice.
Not even talking about that he can't even get a consensus anywhere (not with the devs, not with the miners, not with the exchanges, not with the investos, the community, the users) HE IS A WASTE OF TIME! IF HE WAS RIGHT IN THE HEAD HE WOULD LAY IT OFF NOW.
He definitely has a lot of the community and users on board. I have not been able to find if any miners or exchanges disagree. Most are in favor of the block size increase, but only by some amount, not all the way up to 20 MB immediately.