Eclipse (http://developer.valvesoftware.com/wiki/Eclipse) is one on the list - as a fantasy mod it could align with the thinking I (and the work gang) have been mulling over with respect to bringing the HL2 combat fluidity to the fantasy genre where the MMORPG stand-and-deliver combat is so prevalent.
I think I will have to try (http://students.guildhall.smu.edu/~eclipse/downloads.html) this one out - just to see for myself!
[screenshot images from the eclipse area of the guildhall site at SMU]
WoWtime - just plenty of fun.
[journeytime = 1 hour]