I've been having thoughts about reintegrating some of the extra windows (e.g. Monsters and Minimap) into the UI:
Compare this to the Crawl Tiles UI:
However, I do wish to achieve a clarity in the UI comparable to say, Paprika:
I asked this question a long time ago (October 2007) in r.g.r.d., and to be honest, I've still not made up my mind. But I'm definitely not satisfied with the current interface.