This.
Most modders would drop dead of excitement if Bethesda decided to mention them, and their mod, in a future game.
If you aren't modding for the love of it, you might want to find a different hobby...
But those other hobbies don't offer you nearly as much opportunity for BS internet drama, self-importance, and entitlement issues! Sure, you could try stamp collecting, but what if somebody says your stamp collection svcks? Yeah, sure, you could write them off as immature and just ignore them, but that's only because stamp collecting doesn't offer you the opportunity to throw a hissy fit and pull all of your
mods stamps off the sites that host them, post only flawed/incomplete versions of said
mods stamps on your crappy website when people beg for access to them, and subsequently let your website go down so that the only people who have your
mods stamps are the ones who downloaded them earlier.
But anyway...
The two big ones have already been named: Deadly Reflex and Duke Patrick's Combat Archery. Both excellent mods (apart from DR's poorly-balanced stealth kills and laughably over-the-top dismemberment, and DPCA's tendency to break for no reason) and very good to have influence the new game. OOO was mentioned as well, and shades of its objectives are easily seen in Fallout 3, so hopefully they'll get scaling right this time. What hasn't been discussed are the obvious influences of other commercial titles: the visuals and balance of the magic seem to draw heavy inspiration from Dark Messiah of Might and Magic, the stealth in Oblivion drew on the Thief series -- badly, by the way. Emil Pagliarulo should be ashamed of how bad the stealth was in Oblivion, given his resume. Hopefully that will be better this time around. But the last one that I'm surprised I haven't seen mentioned anywhere is Gothic. Gothic had atmospheric NPC actions that the player could also perform back in 2001, some of which were functional (smithing), as well as cooking recipes. This carried over into Risen, too.