The biggest problems with setting it in or after the TNG era is the technology.
Replicators, recrystallizing dilithium while in the chamber, holodecks, holopeople, holographic crew, projecting holographic ships into space, Paris' transwarp (so what if it turns people into salamanders, you could always use it for automated probes), the "no beaming through shields" being forgotten, warp speeds (everything feels so close together), exceptionally accurate sensors and transporters and the deflector dish being able to solve half the space anomaly problems. The Federation being able to produce a vast fleet and relatively quickly (two Borg attacks and they still have enough capital ships to make the Galactic Empire envious).,
Seriously, set Voyager 100 years earlier and the story would HAVE to be entirely different. They'd have to find dilithium, limited food, no easy access to replacements or materials for all the repair work they need, no holodeck for stress relief.
Voyager ended with the ship returning to Earth in better health than it left, with an advanced astrometrics lab, advanced tech like the batmobile armour, torps that can blow up cubes in one shot and the Doctors mobile emitter. Not to mention the Federation being able to pick the brains of a hyper-intelligent ex-Borg.
100 years after? Less that 50 years after Voyager you've got time travel tech.
The other problems are things like the prime directive dogma, the overcooked and overpopulated galaxy, the huge size of the Federation, the near perfection of the Federation.
Replicators, recrystallizing dilithium while in the chamber, holodecks, holopeople, holographic crew, projecting holographic ships into space, Paris' transwarp (so what if it turns people into salamanders, you could always use it for automated probes), the "no beaming through shields" being forgotten, warp speeds (everything feels so close together), exceptionally accurate sensors and transporters and the deflector dish being able to solve half the space anomaly problems. The Federation being able to produce a vast fleet and relatively quickly (two Borg attacks and they still have enough capital ships to make the Galactic Empire envious).,
Seriously, set Voyager 100 years earlier and the story would HAVE to be entirely different. They'd have to find dilithium, limited food, no easy access to replacements or materials for all the repair work they need, no holodeck for stress relief.
Voyager ended with the ship returning to Earth in better health than it left, with an advanced astrometrics lab, advanced tech like the batmobile armour, torps that can blow up cubes in one shot and the Doctors mobile emitter. Not to mention the Federation being able to pick the brains of a hyper-intelligent ex-Borg.
100 years after? Less that 50 years after Voyager you've got time travel tech.
The other problems are things like the prime directive dogma, the overcooked and overpopulated galaxy, the huge size of the Federation, the near perfection of the Federation.