I suggested something similar as a separate roguelite gamemode, and apparently that's being though on.
But there's something I'd like to see in carrer, it's a gate that brings you to a space right outside your solar system, where you fight a bunch of ennemies (might be faction ennemies !) to go from pocket to pocket, and in the end you land in a pocket with very valuable loot. (You find a uranium enrichment center, or a tri-steel storage facility, or a diamond processing plant. Unique buildings who's sole purpose is to be looted in the end of the deadspace pockets.
There can be anywhere from one pocket to three pockets of ennemy before you get your rewards. The pocket is kinda independant from the system it's attached to, you can pause independently from other players in it. Each gate is one use only, however there's a 30 second mercy period before it deactivates and self destructs so that more ships can jump in.
Whatever happens, you either win and get out or lose everything you sent. Pockets, once completed, yield a lot of fame, and may affect faction reputation.
Rarely, you may find strange ships in Deadspace Pockets, ships not belonging to any faction. In lore, these are explorers who found themselves dragged in a deadspace pocket and over the years their ships became unrecognisable, kinda like Fringe but worse. Some of them will fight you and others will flee you.
Deadspace pockets may feature a ROD that closes in on the exit gate, except for the loot pocket.
(Yes this is inspired by eve online aah)