You don't think a menu [not saying bono's] but a more appealing menu would help? Make the game look attractive. Simplicity and looks are helpful. Just a more... up to date start menu, with the hr4 already enabled would be really nice.
No, i don't think a new menu would help very much. Thats nothing against bono or zorchenhimer or whoever made a menu / menu pack. I like the one we have. Its easy, clear and not overloaded (in my opinion).
New textures, new sounds, a new map format,... that are the things to make the game more attractive. The new sounds part is almost done, i think. We have new weapon, footstep, grenade, splash and surface-specific splat sounds.
I hope bugfixes and new textures / a standard (maybe community voted) hr4 pack is on top of jitspoes todo list.