atpollard said:
Is D20 Modern compatible with T20 (adding lots of gear and gritty combat rules)?
Is D20 Space compatible with T20 (adding lots of gear and gritty space rules)?
Not directly, because T20 was written
before D20 Modern or D20 Space, and WotC went with the rather horrid Alternity rules for D20 Space and a Pulp Adventure feel for D20 Modern.
Is T20 sufficiently compatible with D20 core rules to allow the use of non-traveller adventures in T20?
Since none of the other D20 users published any useful body of SF adventures, this is moot. With the use of "76 Gunmen", however, most of the CT/MT/TNE body of adventures (and nearly anything else that is subject appropriate) are easily adapted.
If the answer to all of these is NO, then T20 deserved the bashing it just received. If the answer is YES, then the 'MGT is Better' overlooks the fact that RIGHT NOW I can buy lots of D20 stuff and very little MGT Stuff.
See my last point.
For me, the two systems - 2D6 (CT/MT/MGT) and D20 (T20) - are mechanically Very Different. I play the system that I prefer. You should play the system that YOU prefer (IMHO).
No argument there.
I WILL argue with anyone who says that T20 "doesn't work". It does work, but has issues due (as I've already mentioned) to an unfortunate layout philosophy and because of the strictures of the D20 trademark license. As a result T20 "reads ugly" if you don't have the later Players Guide (released under only the OGL, and thus not bound by the D20 trademark license restrictions), and rather obviously shares many of the complexity faults of D20 in general.
It is NOT, however, inherently broken and unusable. It may not be "Traveller" to some people, and it may not appeal to the "but I have 120 hit points!" D&D crowd (a gun will kill you just as dead at 15th level as at 1st), but it does successfully meld the two mechanically.
If you like the D20 task mechanics,
If you like class & level experience models (of which T20's is one of the more flexible),
If you want to be able to add Pulp instead of having to filter it out,
Don't ignore T20 out of hand.