Well, here we are...
I'm with 'Crow & others--removal of key portions of the setting = X < Traveller, & therefore
not Traveller, but yields instead a setting with
"Traveller (insert users choice)
game mechanics".
+I'm not for removing any of Traveller's aliens --that's my job as a GM to make them more realistic/ believable in game play: that includes sentient & non-sentient creatures.
+Aliens as Player characters-- I've had folks play Vargr, Aslan, Ithklur, Droyne, and Hivers. No one played a K'Kree. Not one. They make a dandy NPC race though. Bwap? Sure. The perfect Bureaucratic race match up for the Vilani <grins>, and its damp/moist, not "wet" Pols, MB--think Skinks, walking upright
If I wanted "rubber-suited" aliens, I'd play in the Gene Roddenberry any-alien & humans are sexually viable/ compatible 'Verse, Not this one. I refuse to comment on the plethora of half-Vulcans, 1/2 Klingons, 1/2 Betazoids, Orions, and so on, beyond which is fantasy-setting shtuff in RPG's, not hard science of what we understand of DNA today. Again--Not Traveller.
+The Jump Drive is the Jump drive.--Now a more realistic way of using it/ explaining it would be using acceleration time, and then punching out when escape velocity is achieved--as Bryan Gibson does in his ATU "Terran Praesidium" setting. Same amount of time is used up/ and same distances crossed / Same TL needed for the Jays to achieve their distance/ fuel requirements. His is an ATU example using realism, & an alternate timeline-historical setting. The 'week-in-the-hole" still stands as one of the reasons why a great many Historical events occurred the way they did.
+Historical setting 1st Imperium to the 4th. Sorry GURPS fans, diverging off into 1117+ "it never happened" (no Rebellion) made GT an ATU
as I define it.
+Realistic Stars & System generation --Here I as the GM like to use the best known science available. I know folks who've played this game from DAY 1, and they still haven't wrapped their brain around the UWP digit data string for worlds. CT began, then MT picked it up; TNE continued and added to the process (dropping the infamous Type VI stars). Why shouldn't a new version update the process? There is precedence, after all. Only MWM holds that answer.
+Realism in the game, per se. I like to put cause & effect into the game. I like the players to have to make real-life type decisions in their adventures.
Example: So ya'll Succesfully Hijack a starship, don't wonder why you're being hunted, okay? The law is the law, and while you can get away now..you're still running, they're still waiting.
Another example: Law level 0 means the same applies to any Law enforcement team of that System Government response to YOUR lack of lawfulness is one of my favorites. Don't expect a warm fuzzy shrug, and when you open up with an Autopistol in a crowded SPA terminal there, or yell "I've got a BOMB" there. Expect the most extreme prejudice to be meaningfully applied in the most expedient fashion.
Example: Choosing who lives or dies often occurs in real life, and sometimes you face the choice of the ones you love, the ones you can save, and the ones you can't.
Example: A Successful ending to an adventure isn't always "a Happily ever after". You can win against all of the odds, and still be a pauper. Sometimes the heroes die, the asteroid strikes the planet, the jump drive totally criticals out.
The above are all My takes on realism & Traveller. Thought I'd share.
Whose next?