Seconds after the close of Endgame the Borg open a transwarp conduit from their hub in the Beta quadant and come at Earth in force, wiping out the fleet and assimilating everything in Sector 001 except Voyager, which Q whisks away and deposits in orbit of the planet of the 37s and tells Janeway that it's her and the crew's duty to stay and help the human population build a fleet to protect themselves, and it is there that she bcomes an admiral and many of Voyager's senior staff, as well as Amelia Earhart, become captains.
Now THAT'S an interesting idea.
Which wouldn't work because 7 of 9 clearly stated the TW network (as in ALL TW hubs) has been obliterated (a shockwave initiated a chain reaction which destroyed the hub in the DQ that also connected to all other hubs - per dialogue in Endgame).