Dave doesn't show up as longed on when he is working through the AminCP. Just because you don't see him listed doesn't mean he isn't there. And I only use the AdminCP when I need to... I prefer not to be the cause of the site crashing.
Actually, RSS has been on Dave's list for a long while. Not the list in the mod's forums, but his main list elsewhere
on the site. It was listed well before the upgrade. The main problem is implementation and making sure it isn't used as a vehicle for a spammer to get free publicity. I have seen WinXPCentral's feed clogged with spam before, and it is not pretty.
Dave is looking at a couple of options for it, though. It's not on the front burners, as there are a few things more important right now, like choosing a hosting company and seeing about some plug-ins for the site, maybe a skin or two. But it is something being looked at.