Can there be smaller respawn times for certain modes please?

Objective modes and possibly team slayer are fine, but for modes that people are frequent to die in a lot like FFA and Tactical Slayer why is the respawn time 7 seconds and not 3-4 seconds? 7 seconds in these modes just feels way to long when in previous games I believe it was 3 seconds for these modes. Please change it back to 3 or 4 seconds.