I'm probably gonna get flamed for this, but I always liked the PvP in SWG.
The best part about it, PvP was open world and could happen anywhere at any time. There are spacific PvP zones, but they are not instanced and there are no q's, you are just flagged for PvP automaticaly while in the zone.
Unfortunatly with the way sector space is set up, open world PvP may not be possible. But a PvP zone would be nice. A spacific system open to both factions, anyone can warp in and join the fight. The sides may not be even often, but they naver usually are in war.
They actualy made a que system for what they call "battlefields" so it is there now, However, not that many used it, after the new shiney wore off, in favor of Restess open PVP and/or the new "city battle" system where PVE and PVP was both important to the cause.
But, I agree 110%. The old base battles of yesteryear (pre-CU and even CU) were very enjoyable. Was always fun to equip that saber and watch the scatter altho you pretty much ended up on the BH terms shortly thereafter. lol