I disagree. Yes, CTF is old, but it's FUN. I think that not enough people gave CTF in JK a chance (JK CTF was awesome) and consequently we didn't see many custom CTF maps made (until recently). I blame most of this on the network model. Getting a big game together was difficult for many people, without getting bogged down in lag. It was easier to just fire up a one on one saber duel or three way deathmatch (KFY in MotS could be played with three and it was still fun).
I did play some incredibly fun CTF games in JK and in MotS with the MotS CTF conversion. Of course we all had super fast connections (those of us who played).
With dedicated servers, client-server model with improved netcode, and a larger community, there is a great potential for more CTF and more maps. So I'd like to see it happen, even though it (CTF) is "old."
Other folks don't seem to have a problem recycling old game mods. See "class based warfare" with team fortress. Still super popular. What is counter strike, other than glorified team deathmatch with classes? Etc etc. You can argue all you like the merits of each game mode, but the point is, in JK2 they would be different than in other games (due to saber and force) but would be excellent. I'd like to see them.
Other game modes like the ones planned for Obi-Wan PC would be cool (Jedi Arena, Escort the Queen, etc).