It can also be very fun to drop a rocket or two on the head of an enemy which is already in the ditch, or to slow them down. In addition, there are some catwalks along the perimeter with several stone panels to pick-a-boo shoot from benid them.
If it still took 11 seconds to escape but there were no automatically given RL and full HP and armor, or if it was a totally inescapable pit, I would appreciate it significantly less.
I would certainly make the color palette very different from the one the given level has, but other than that I don't have too many gripes.
Edited 10.68 hours after the original posting.
@Geniraul: Sure, you can do that. Doesn't make it any less annoying though.
Edited 39 seconds after the original posting.
The reverse is also true. There are a lot of crap levels produced in one session :)
You can, however, rocket jump or plasma jump out of the ditch, as all the weapons are given when the player spawns: youtu.be/oBkSQnbmbCc