I have a few values that seem to produce the opposite effect when manipulating the parameters, i.e. control “roof height” causes roof to lower rather than rise. That's a very basic example, sometimes I have controls that are dependent on 5-10 other values and it would be SOOO much easier if I didn't have to spend the time figuring that out, just to get the controls to correlate with the expected effect.

In the daw “Ableton Live”, you set up macro controls just like parameters in Houdini, only you can flip the range at the parameter level and it makes life great.