The problem is that the comparisons are not reasonable (at least re GURPS and Hero). These systems are explicitely "universal" and clearly state that within.
MGT calls itself "Traveller". For many gamers, that term has described a certain setting, the OTU for ~30 years. For others, that term has decribed a series of RPGs with pretty consisten underlying tech assumptions -- jump drive, plausible weaponry, attention to detail on military stuff, etc. Both groups of gamers are reasonable, IMHO, if they expect a game that is (a) called "Traveller" and (b) packaged to evoke the classic edition of Traveller to, in fact, resemble what they have defined as "Traveller" for THREE DECADES.
Now, I happen to think that the decision to make MGT into a universal ruleset is sensible. Why reinvent the wheel every time. But I don't think that the MGT core rules make it clear that this is a generic rules set.
Nor do I think that anyone at Mongoose set out to deceive anyone. My guess is that like most businesses, RPG products can seldom have all the resources they theoretically need. And I don't imagine the license was cheap (it shouldn't be; Traveller has real value IMHO). I think that there was a lot riding on that first printing and that mistakes were made (they always are in my experience, including my own rules). EDIT -- I don't always remember this, but I should. There is an INFINTE difference between producing a professional gaming product and knocking together a set of house rules for personal play. So we really should cut game companies and designers some slack on quality issues. To a point, of course.
But I don't think that is is accurate or helpful to pretend that MGT -- as shipped -- was an explicitely generic game in the same way that GURPS, Hero or Basic Roleplaying was. It may have been intended to be generic, but it didn't ship in that condition. Therefore, insinuating that Old School Traveller fans are somehow being unreasonable isn't itself very reasonable.
Truthfully, Ty, I agree with this. Mongoose Traveller, as presented, has some nods to other sci-fit settings in it but is not strictly generic as Savage Worlds or GURPS is. I kind of see the game as trying to cover sci-fi mostly; Mongoose has Runequest for the fantasy stuff, for example. I believe from what I have seen they are building towards a "generic science-fiction" rulesset, not an all-encompassing one like GURPS.
Allen