I'm reserving judgement that the US Torchwood will be any good, I just don't see how they'll fit it into the canon of previously-established storylines, time- lines and characters, maybe they'll slot it into the 'lost' Torchwood group that was mentioned a time or two? I don't think that it will work as a stand-alone version.
I think we can bank on there being no intention to fit the new program within existing canon. That kind of hamstringing of productions has been the cause of a good amount of mediocrity and failure to perform. Count on the effort to be a reboot. Whether that will be successful or not is, like all things, unknowable in advance.
Actually, I feel completely different about Torchwood after CoE. What Davies did with Jack's grandson at the end was beyond the pale, Jack's mute acquiescence with the act (he didn't even explain it AT ALL to the kid, just plopped him up there. Why didn't he at least hold the child while they ran the machine? Jack wouldn't have died anyway...) made Jack into one of the most unattractive TV characters I've ever seen. YMMV.
I don't think the intention is for Jack to be a hero, in the same vein as The Doctor (who, incidentally, especially in the last few episodes, was not very hero-like) except perhaps as a tragic hero. It isn't clear to me that Jack wouldn't have sacrificed himself, if he could -- and that's been true on other occasions I think -- but he couldn't in this case, and so he sacrificed something close to him, two things, really, if you think about it. This, in acknowledgment of the horrible decision he felt compelled to make, for the greater good, decades ago. This theme -- doing horrible things for the greater good -- is ripe with drama. How would each of us decide, if placed in Jack's predicament? Would we sacrifice (literally) the world, so as to avoid the hard choices?
Reminds me, in a way, of another tragic hero named Jack -- Jack Bauer. I think Captain Jack, though, is missing something that Jack Bauer has had -- the ability to project a deep love for others, in Bauer's case, his daughter, and now grandchild, and perhaps even some women in his life. He seems to better project true compassion and concern about others, while Captain Jack seems, at times, to be truly cold.
However, I don't think that that is the intent. Rather, I think that Barrowman is simply not as good of an actor as Sutherland. That way too much of the burden for making Captain Jack a (tragic)
hero falls onto the writers, and that's simply too big of a job for any writer. It's a team effort, and as much as we appreciate Barrowman's ability to project a fun-loving spirit, I think he falters with regard to projecting deeper sentiments.
And that's where CoE fell short IMHO: Not the story, not with what happened, but rather with the actor's ability to convince us to love his character
anyway. We viewers can choose to hate the show, or the character, as a result, but I prefer to fill in the gaps in Barrowman's performance and understand Captain Jack as the tragic hero that I believe he was intended, by the writers, to be.