ParameterTool will be our first b.i.m.m Tool and it will help you to edit element parameters in a spreadsheet like manner. You'll find a screen cast of an earlier version here on our b.i.m.m web site. We plan to release the 2011 version in summer.
You can use the ParameterTool for multi family / type batch updates or renumber elements, rooms, grids... or just for easy checking etc... It has become our nice little Swiss Army Knife.
Stay tuned!