I'm not feeling it. The Commune probably doesn't get a lot of natural traffic, so the author's ability/willingness to promote their work will probably play an outsized role in the rating. Someone who's well-connected in (for example) SCP Twitter, or is simply popular on the mainsite, would almost certainly get more votes than an obscure member could ever hope to get. The mainsite is a popularity contest to some extent, of course, but they have the membership volume to mostly drown that effect out; we, however, do not.
Another problem is that people like to post articles here that wouldn't pass muster in a popularity contest (i.e. the mainsite), but that they're still proud of. People would still be allowed to do this, of course, but having an article stuck at +1 stings a lot more when other articles are hitting +20 or +25 than when the competition is at +3 or +4. I worry that bumping up vote counts like this would incentivize people to pursue projects with more mainstream appeal, which (at risk of sounding dramatic) would undermine one of the Commune's greatest strengths.
I think the current system is fine.