As much as I love objective, the instant respawns are murdering it.
Maps like Haven and Abandon are absolutely terrible for any kind of objective game. In Haven KOTH, enemies you kill respawn and can chuck grenades at you and kill you before you shields even restore from the previous encounter.
Haven is especially the worst given how sight lines are so long and at any time you spawn only 3 second travel time to the middle of the map.
I just played a KOTH match on abandon. The score was 149-140 for a whole minute because there were always two people from opposing teams on the hill at the same time because both teams were spawning only a 3 second sprint distance from the hill.
In oddball, the same thing happens where an enemy you killed spawns and kills you before your shields have a chance to restore from the previous encounter.
On large maps like Complex and Ragnarok, set the spawn time to 3-5 seconds. On small maps like haven and abandon, the spawns should be 5-7 seconds.