Compared to many of the other Danger Rooms the one with the infinitely respawning Bombies seems to have far more waves than all the rest. To such a point that I actually had a friend of mine ask for help since they were convinced they were stuck in some sort of infinite loop. Not to mention the layout of the spike traps and sometimes timed exploding blocks means that there's no path to kite around the map, you're forced into a corner by lack of movement and then you have infinite bombies thrown at you along with Scarabs who might just decide to stay at the other side of the map the entire time.

Beyond that some of the newer Danger Rooms need to be addressed since they also don't fit the 3 wave format... (the 2019 update ones)

I'd argue that at least for the new ones with more waves you need to lay off the "infinitely spawning threat" deal, Bombies? Rockets?

Even the 3 wave one with the mini green slimes is polite enough to let you block them in their spawn location, but having to deal with an infinite bombardment of Bombies or Rockets with more than 3 waves and no way to block them just isn't fun.

____

Make the Bombies part of each wave's monsters instead of an infinite respawn, and put a switch gate for the rockets like you have for the Mini green jellies

And go back to the 3 wave format

Not having an infinitely respawning monster would allow progression to happen a lot easier, and a timed switch gate would give players some breathing room but also give them something new to have to manage.

Get players to test your new levels and take it with a grain of salt when they're over 50,000 prestige... if you want more genuine play testing then pay more attention to feedback from players below vanguard rank...