This group is for people who want to experiment with constrained building techniques.
I would consider these similar to what in literature is called constrained writing techniques - here's the wikipidea quote: Constrained writing is a literary technique in which the writer is bound by some condition that forbids certain things or imposes a pattern, e.g.: Limitations in punctuation, such as Peter Carey's book True History of the Kelly Gang, which features no commas; Lipogram: a letter (commonly e or o) is outlawed.; Acrostics: first letter of each word/sentence/paragraph forms a word or sentence.
I will set some experiment themes up in the conversation threads, but feel free to invent your own.
Together we can create an equivalent Oulipo (http://en.wikipedia.org/wiki/Oulipo) group for Lego builders.