Earlier quoted context omitted.
I love the movement mechanics of previous UT games, between always-run, dodging (doubletap a direction), double-jumping, and walljumping (jumptowards a wall, doubletap opposite direction), it was a rather entertaining game to play. Add to that the completely crazy weapons by today's FPS standards, and you have something I haven't seen in a long while. I wish it would come back. If it has that, that game has a player.
The interesting thing about the weapons was that most were rather slow-moving and projectile speeds were very important. So motion prediction was far more important than for modern shooters. Shooting someone out of the air with a rocket launcher was a feat.
That, coupled with the high mobility (Jetpacks!) of the players lead to real duels that could last a while.