Without even doing that, you still get a major difference.
Karma is implicitly per user, not per post.
When we unite against a common enemy that attacks our ethos, it nurtures group solidarity. Trolls are sensational, yes, but we keep everyone honest. | Game Memorial
As much I use facebook related mods, I'd say anything facebook related should be mod/plugin material. Facebook updates their shit quite often, many times breaking how things work and so on, you wouldnt want to have to update the whole forum just to keep up with their excessive changes.
The update philosophy in Wedge is simple: just upload the modified files... That's pretty much the same philosophy as in Aeva Media, as you'll remember :)