I think if there is one thing that this event has shown, it is that RNG based boss spawns are a pain in the Language! :P . So I got thinking why not create new terminals for these RNG bosses, but by using the already existing assets to make it even easier? I think that using existing assets would be the fastest and would have the highest chance of actually getting put into the game, due to the fact that devs aren't starting from scratch. Also, more terminals = a good thing. Right? Getting legendary quests in terminals would also be easier :>
Blob: Not sure how to use existing assets
Electro: Not sure how to use existing assets
Green Goblin/Living Laser: The Raft could be a terminal for these two.
Grim Reaper: I hear he has a Hydra outpost in chapter 4. That could be his terminal?
Lady Deathstrike: Her terminal could be the Purifier Advanced Base.
Loki/Malekith: Why not take the building/area that Malekith is in (in chapter 9) and join it with the Asgardian Throne room that Loki is in (with a portal) and then make that a terminal?
Rhino: Not sure how to use existing assets (maybe spice things up and make it so 50% of the time you get Lizard in the Zoo one-shot and 50% of the time you get Rhino as the first boss in the Zoo-one shot. IDK, they are both animal based).
Sabretooth: Not sure how to use existing assets
Sauron: That cave he is in could act as a terminal for him.
Tombstone: That area that Tombstone is in (during story mode, Lower East Side building) could be a terminal for him.
Venom: You guys know about that building in Crumbling Brownstones with all of the spider-slayers and Venom as the final boss? That could be Venom's terminals.
As far as I know, all other bosses either spawn pretty reliably in Midtown/ICP/HT or they have their own one-shot/terminal (or are a mini-boss of a larger terminal, like Pyro in Magneto's terminal). Or maybe I missed a few that don't have another reliable spawning point.
There are a few that I had no idea how to use existing assets to make a terminal for. Blob, Electro, Rhino, and Sabretooth.