To be honest, and this is my own personal opinion, I think we should stop development of subSilver 2. I understand that a lot of people use it and styles based on it, but I think it's time to lay it to rest. I don't actually support it in anything I do - I find prosilver a lot easier and cleaner to work with
I've seen it before that 1 or 2 prosilver changes for a feature/bug becomes 7 or 8 changes for sS2 - to me that's not a very efficient use of time & resources. It's time that could be spent making phpBB better
I'm surprised that one-one has posted a prosilver based subSilver style (prosilver base code, but using images/layout of subSilver). That's the best of both worlds
At least if they have, I've not seen it yet.