I wouldn't be interested simply because, at this point, my modeling stash is so large and my specific interests so necessarily narrowed by the time that it now takes to complete a model in the respective detail and finish which I now demand of myself that I wouldn't be interested in having disparate models arriving that I would only have to sell on eBay because of lack of storage space.
However, when I was more of a novice modeler, I did indeed build all kinds of different genres and odd subjects just out of curiosity. I could see myself joining one back then, if it.were available.