Voted with +1. It will be easier for you to deploy SNAPSHOTs automatically.
We considered the moving to GitHub for PF Extensions too and decided to do this in the near future as soon as time will allow it. The problem is that we use some Maven plugins for SVN and don't have experience in moving code from SVN to GitHub. Do you know how to migrate the code from SVN to GitHub in an easy way?
Please also consider releases in Maven central repo. I know, I can be annoying, but here is the link again https://docs.sonatype.org/display/Repos ... sage+Guide