The folks at DBA are quite keen on the idea of explicitly including business intelligence topics into the scope of the site. The site is also getting some momentum, and buy-in from the SO and SF mods. I think that it's probably the best avenue to set up a SE forum where B.I. questions are likely to get answered without getting lost in the noise.
Does anyone have strong or even cogent opinions about merging this site into the DBA site, which is (depending on who you ask) more of a generalised database design, development and administration site rather than pure database administration.