Well, at least you won't see the Legionnaires bragging about their cell phones, now that's technology you wouldn't hope to see not even in the 40th century.
I think that the usual sci-fi setting was great 50 or 60 years ago, but now writers must come up with new stuff or else it all feels... old.
I'm pretty sure the flight rings double as communication devices. Those rings are the Legion's friggin' Swiss Army Knives.
One of the neo-classic Legion's problems is that the tech doesn't seem that more advanced than the 21K DCU. Heck, there are places where it seems that the 21k DCU is more advanced than the Legion's 31K.
That's where a good little galactic catastrophe/war/singularity event comes it. It could be used to explain why things don't seem as advanced as they should.