I hear talking like the big guys we are here to defeat: this is not the FED.
If the economy goes wrong then let's give them some QE, then after a while QE2, then QE3 and so forth.
If we start raising the block size it will be like that in a way: tomorrow 2MB, in one week 4MB, you understand the trick.
This is not the $ and never it will be.
If it's needed to bring adoption forward then go ahead. Bitcoin will never succeed when adoption is hindered effectively. Sure there are potential problems, one has to deal with it like it happened all the time. And suddenly an arbitrarely setting becomes a breaking stone.
To me there's one fundamental assumption to make: this coin is made of 21 millions pieces. We can break it into more digits but we will always have 21 mln unless we don't super hard fork it.
Let's not be unrealistic: BTC is not for mass adoption. This is what I wanted to say in regard to my dollar metaphor.
And, look, I'm not saying problems require to be left on their own but more thank a block size, hard fork debate I see different people's opinions having battles.