I voted pro because I am for increasing max block size. But IMO it's too early to jump to 20MB. Maybe less?
It's actually about 16.8 MB, and it's very unlikely the block size will grow to anywhere near 16 MB immediately. Consider that it took 6 years for Bitcoin to go from 0 to 0.5 MB, despite the fact that the block size limit has allowed 1 MB blocks for the entire time.
Exactly! Blocks will not reach 20MB the day we hard-fork. It will take a lot of time and transactions to get there.