[geocar]

I suppose it's a matter of taste, and I just look at C-style macros as a means to an end.

I suppose I think the fact it's not more common has to do with this knee-jerk reaction to avoid macros like some kind of plague.

Regarding your other point, I agree: at a certain point hacking up the DSL in perl or lisp is going to give enough greater flexibility that it's going to be worth the additional complexity (to the build system, documentation, programmer-requirements, etc).