I'm going to have to go ahead and disagree with you.
It's my favorite of the pak.
Quake 4 has
enough open rail areas.
It's quite refreshing, to me, to have 1 map that is tight.
I've always liked corridor flag chasing and cutting off A LOT more than TDM in the middle of the maps w/rails.
Q4ctf1: Rails in the middle, rails in the flag room.
Q4ctf2: Rails in the middle
Q4ctf3: Ridiculous rails in the flag room
Q4ctf4 is the only map where the rail cannot dominate; therefore turns it in to an actual old school game of CTF with routes, chasing, and weapon variety. Q4ctf4 is the only map that gives a
hint to QWctf which is the mod that started it all.
Yes, yes, yes. We've heard it all before:
The middle is laggy. We all know.

But it's laggy for
everyone...
There are 3 other routes to cross the map other than the middle.
Leaving Q4ctf5 in the rotation is way more absurd than Relativity.