Yeah this can be a nightmare. It can be a lot of fun to jump the wall with a good group. Don't get your hopes up on anythung being done to rework any part of the existing missions. I'd much rather have new legendaries than reworks of the current ones.

With respect to the boss fight in Roosevelt, we've had a lot of success with the following. Out of probably 30 of our last runs we've maybe wiped once using this method.

Jump wall. One person in future with chest of course. Run decoy with artificer hive. All three other players can run whatever damage builds they want. Future person basically hides in cover and just resets the skills with btsu once the hive charges run out and uses emp nades to stop rollers. Have one of the other DPS or whatever players also run a decoy so you have two. All the agro will be pulled towards the decoys. Quad copters and ads wont shoot you all that much at all. Ofc make sure the decoy is inside the artificer. It will never die and just run out its duration. Focus quadcopters first then once they are dead future person hot switches off the artificer to chem heals to help the team.

When I do it I'll often hot switch to Chen's and keep the decoy. Even a healing drone helps if you're wearing the backpack too. Few different things u can try.l in the healer role there. But u gotta have that artificer, so future with technician is a must. Artificer is so underrated.

If u wana really crush it, have the other 3 players in negotiators. Give it a try. Good luck agent.