I think that's a great idea. There could be stats linked to it which highlight how many votes they make in a week, how many different authors, links to their hivetasks or hivestats, what authors/tags they frequent, etc etc, the list goes on. There are going to be problems with curation trails if no responsibility/accountability is taken by the curator, if all their data is blindingly clear to see they might think twice.
I prefer manual curating myself too, I think I directed that comment to you as if someone else was reading it, lol. I had quite a few to reply to yesterday morning and my belly must have been growling towards the end.