Welcome, enjoy your stay 🙂
As for 6mm rpg/adventure gaming, it’s not only doable, it’s damn good fun too! I’ve played both sci-fi and fantasy games with all 6mm models and I can honestly say that I don’t miss the detail of 28mm, as most of my 6mm sculpts have a lot of detail without being cluttered, something that I sometimes find is a problem in 28s. YMMV.
http://lasersandbroadswords.blogspot.com My project blog