I can see where you are coming from Ron but most Forums that run GBs have their subject calendar set for a whole year, sometimes more. That way people have a chance to think it through and search for/save up for the kits they want to build alongside what they would buy/build anyway. To some degree, I think that one of the issues with time etc is that most people (not myself this time as a year wouldn't have been long enough) get started and finish within a few weeks, many within the first month. Those that do not start until later and/or need the whole time due to other commitments tend to do the last mile by themselves. Although they get the same support, and support for GBuilders has been superb, it is a bit lonely running the last leg while seeing everyone else returning home in their cars...... (bad metaphor time)
I have suffered the same as you Dave all through this GB, I have had so many ideas going around my head and searching for kits to do them since we started this one, I just have not given it the time or concentration to do a decent job of it. However, I do believe, for the same reasons you give Dave, that the GB does tend to focus people into having a go (and that is the most important part, having a go even if not completing) at something they may never have thought of or attempted.
It is so hard to please most of the people most of the time. In fact, that will never happen but it is a GB, not the end of the world. It is a bit of fun, not a competition. Let's not take it too seriously but then again, let's not keep channeling it so it stays in our comfort zone or the GB will just become what we do anyway and therefore pointless.