Staying in the Bay Area longer than other acceleration programs which decentralized (& often diluted their network and quality) earlier was wise. That said, from the outside it seems like sticking to the Bay Area is no longer optimal.
Startup School and YC China are mentioned but I think by now there must be enough YC alumni all over the world to facilitate local communities/office hours and investment activity (while keeping the quality).
For example I like how Lambda School is expanding globally much faster. I know the two are difficult to compare and it is not a straight forward decision to make.
Would love to learn if you have some thoughts on this.