Seriously, the latest D&D (5.5 or 2024) is structured as a game mechanic to ultra-customize characters into almost a “superhero” type of campaign [which isn’t innately bad] … but I am having a very hard time imagining how you translate any “space opera” setting or mechanic (including Mongoose Traveller IP) into that sort of a “headspace”. Can you really have LOTS of specialized alien races (with race bonuses) and lots of specialized classes (with class bonuses) and lots of specialized skills and lots of specialized optional actions and lots of specialized PSIONIC powers. Then build characters by stacking bonuses from all these options?
If they succeed, it will certainly open a door for people that are not “Typical Traveller” players to have some very unique “Traveller” games. The “rules lawyer” in me just sees it as a Herculean task that does not translate directly from what already exists to the D&D 5.5 paradigm.