The problem we have, is the BF2142 engine isn't really designed for interrior buildings. If you attempt to walk into the 2 story interrior (the 1 with the arches) check out the fps inside there. If we added furniture etc into the buildings as well, you'd cause more fps problems.
Having said that, we'll experiment during R2 to try and get siome interriors working with nice FPS and additional props. But interriors weren't something we initally planned for in R1.