It's such a shame SB never took off in West. They tried to bring it here twice (Devil Kings and Sengoku Basara: Samurai Heroes), but they both sold very poorly. The second time was much worse, as they let the game be what it was and didn't localize it into something else. They totally tried going for the niche market, even localizing the anime, but it just didn't work out in the West.
And that's why we don't have anymore SB titles in the West.
Samurai Heroes was a victim of several things.
1) Capcom did little to advertise the game. Failure to get out in front allowed every media outlet to create their own narrative of BASARA being yet "another mindless DW clone", instead of actually showcasing just how "stylish" the game could be, in the right hands.
2) Capcom's expectations. Even Koei's games don't bring home the kind of bacon that Capcom was likely aiming for, and that's with Koei taking the time to actually cultivate an audience who already know what they're getting into when they buy their games.
3) Capcom didn't do everything they could to cultivate that niche they were after. For example: No JP vocal track immediately made some people turn up their nose. You could arguably blame that on the Wii (or perhaps Capcom's unwillingness to either ignore making the PS3/Wii versions have parity or invest in dual-layer Wii discs so that they could fit both tracks for the Wii release). Even though the actual dub was good (text errors were another issue altogether), it rubbed that very segment that Capcom should've been appeasing the most the wrong way.
Funimation's dubs of the anime were also good, as well. But unless you had access to their cable channel, I can't imagine you being able to just catch the show randomly on TV, years ago. Granted, Toonami wasn't really present during that timeframe, either.
That all aside, if Capcom does decide to try again, I hope they'd be willing to learn the lessons from their last two efforts, and feel free to cite what Koei and Bamco have been doing otherwise. Even a PSN-only release with English text and Japanese voice overs (a la One Piece) would be a step in the right direction.