So, it's somewhat more complicated. You could pull the technology, units, ideas, institutions out of the common folder and put them in a new mod. The biggest problem would be that the vanilla interface doesn't handle that many ideas (or our institutions) so you would also need the right interface files and graphics for the institutions and ideas. So it's not impossible, but you'd need a decent idea of what you were doing to accomplish it. An easier way might be to deactivate the portions you don't want by modding the mod files depending on exactly what those are.