Well, speaking as someone who was a very early advocate of *adding* Best Relationship to the Kerth categories, I have to admit I'd be inclined to keep it.
Disclaimer: You guys are the K-Com now, not me, (believe me, I'm very happy with that state of affairs! ), you're doing a fabulous job, and I will totally support you, whatever you decide to do. But, since you asked...
it's been my experience that there are some really *great* stories out there that just don't quite fall into "drama" (for instance Sue's current WIP, "Platonic." No bad guys, no emergencies, just all relationship, 24/7, and it's excellent). So the relationship category is the best place to showcase them. Mind you, I haven't really kept up with fanfic lately, so maybe this year there really aren't any (or not enough) stories that would need this category. You guys have the list, you make the call.
PJ