I like that there's both an update, downvote and boost feature. Recently the sorting / weighting mechanism was changed where boost = 2 upvotes so it's nice to upvote something + give it a boost so it sorts higher.
There's a lot of customization user wise also, I've been exceptionally busy working with the other contributors to make the mobile UI/UX a priority. There's been a heap of dev work going around so keen to see when that all gets into prod.
I've got a feeling that with another solid month or two of updates, tweaks and features that kbin will be really solid.