[xorcist]

"It's just temporary" is one of the five famous last words (together with "it worked on my machine"). It can easily turn into one of those projects where someone just shoved in autoconf to turn them into a giant ball of IFDEFs so nobody really knows which combinations work.

Toggling also only makes sense for the cases where you don't change the structure of your data. So be careful, and make sure you have a plan if you decide to do it.