Ok, so there will probably be a bunch of issues with the installation process on certain computers, regardless of how bug-free it is on the Snow/Flow/Luxe end. I just found got stuck on one myself:
If you're on OSX or Linux, and the Sublime Text package installer isn't showing the snowkit packages in the list, you might be having certificate issues. Pull up the console (ctrl-`)... if you're seeing that the github certificate is being rejected, you can resolve this by deleting the Package Control plugin and reinstalling it.
Post any other issues/workarounds you've found here.