No, because one might want to launch the clip later. Think track with variation on rhythms, and another track with variations on fills, all to be used in the same scene. Then think of other variations (basses, etc) with variations to be used with the same scene, and changing variations in each track as time goes on.
That is, clip launch should be optionally completely independent of scene launch....
Do you mean right click on them and press remove stop button?
This just disables the clip slot; one can't launch it with a pad (e.g. APC40)
(BTW, "Answers Galore" just seems to be other complaints about lack of this functionality (alopng with unworkable alternatives). That said, I'm happy that my voice has been added to the chorus.... I stated this thread in Live 9 Beta; this forum was just an afterthought for me, but I'm happy to hear there are other intelligent users that would like this function)
However, thanks for the references, if not for the snark....