> In Q3, it was more the way jumping impacted your movement speed which was a discovery.

Not really sure what you're talking about. Rockets and grenades hugely impacted player speed in Quake 1, but not so much in Quake 3. Check the speed run of the following level to see what I mean:

http://www.youtube.com/watch?feature=player_detailpage&v...

The quad damage'd grenade jump at 11:19 is mind-boggling. I don't remember seeing that in Quake 3.