You still haven't explained why that requires changing the existing material instead of creating new material. I love the Mindjammer setting. I like the 2300 setting. I like the Charted Space setting. Pioneer sounds interesting. I am sure that if Mongoose created a different tech setting it would probably be equally interesting.
What I don't see is any advantage in destroying existing material to do that. You make Traveller last another 50 years by finishing the divorce between the rules of Traveller and any specific setting. The rule books can and should have an array of technologies supporting a wide range of sci fi playstyles. Charted Space supports a particular tech paradigm. Make your new tech paradigm in a new setting that is built around that.
What I don't see is any advantage in destroying existing material to do that. You make Traveller last another 50 years by finishing the divorce between the rules of Traveller and any specific setting. The rule books can and should have an array of technologies supporting a wide range of sci fi playstyles. Charted Space supports a particular tech paradigm. Make your new tech paradigm in a new setting that is built around that.