The corpus of official CT adventures that use LBB2 designed ships far exceed the number of original HG designs that make it into the original CT material. Most of the HG designs are in one supplement (S9) and many of them are broken.
Some of the licenced products, e.g. FASA, got the HG rules wrong and designed illegal ships.
The rest is fan produced.
I have probably designed a lot more HG based ships than LBB2, yet for PC scale adventures I keep coming back to LBB2.
And as for the last produced rules trumping what has gone before that would make the Traveller Starter Edition the defining ruleset - guess which design system it uses![]()
Weeeellll, I personally don't consider a re-release of Book 2 into a starter set, or even TTB, the "last produced rules", but a guess a lawyer might
![Smile :) :)](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png)
It seems to me it would be more work to just say "OK, LBB5 is no longer backwards compatible" and fix what's broken in it, and keep using it as the reference set, than to fix all of what's broken with LBB2.
I suppose it's moot as T5 will (hopefully? Soon?) become the most recent official release. But it's always nice to imagine.