Is the 20 MB blocksize increase planned for both bitcoin and gavin coin ?
Satoshi built Bitcoin, the currency we all use and love.
He selected the supply cap, the inflation rate, the mining algorithm, etc., etc. Let's not forget, he also selected Gavin. And Gavin is more important than the 21 million bitcoin cap. So if you want to throw Gavin under the bus, you might as well throw everything else there too.
I don't know how you made that speculation, but Gavin is not more important than anything when it comes to Bitcoin.
That would defy the whole principle of being decentralized.
Apart from that, if Gavin was to depart, Bitcoin would take a hit but it would survive it as it did many other obstacles.
On topic: I think halving will come first.
I believe we still have a long way until we hit the 1mb limit.