Someone may already have this idea, but here it is anyways. (If i'm to late, oh well )
This is a modified version of Voidstar, where the attackers are trying to plant the bomb, and vise versa. The attackers have a choice of two nodes they can try to cap. One on level 1 and one on level 2, all they have to do if cap ONE and hold it for X amount of time. The defenders goal is either A) Keep the Bomb/node from being capped until the time runs out, or B) disarm the bomb/recap the node and win (even if there is time on the clock). The second floor with have more open space much like Mid in Alderaan, great for ranged (Snipers, Sorc's ex) where as the first floor has very low LoS (line of sight) making it a great place for melee and for very scary gameplay, as an enemy could be right around the corner. So be sure you are on your guard at all times when on this Floor. The four ramps that go to the second floor have some trap (like in Huttball, but not Huttball =P) to keep things hard at all times. (Who likes easy maps? Oh, not talking to you Pubs, you like everything easy... For the Empire >:] )
The following are some renderings/drawings of my idea:
(My drawings are all freehand, so please be patient with my handwriting xD)
http://i.imgur.com/oGd3lGS.jpg
http://i.imgur.com/AoK0mOI.jpg
http://i.imgur.com/ooZPPOH.png
http://i.imgur.com/Wq7YIvF.png
Tell me what you think If you want a more high res render or a full map, let me know. Don't want to spend to much time on it if you hate the idea.