As I've died a few times, I have plenty of time to type this out. I'm sick and tired of the super-steep timer for Medical Probe respawns. It makes me not want to play anymore.
I've stopped playing for the night several times because it's come down to a choice of fighting my way through a compound of enemies that I've already killed, or waiting 8-10 minutes for a resurrection.
In short, I feel that the respawn timer increase should be scaled way back.