Only if it's good.
Now, yes, Bebop has a movie, but I wasn't satisfied with it. And I'd like to see a live-action adaptation.
I've always loved the style of Cowboy Bebop, and indeed, style is one of the first things you notice about it; from the opening, you know you're in for something special. It draws from various influences, most of them timeless. There's jazz, sci-fi, noir, the western, even a hint of 70s blaxploitation. I count it as the greatest sci-fi show ever, but that might just be because it's one of my favorite shows ever, period.
There's wiggle room there--take Firefly or Star Trek or The Twilight Zone over Cowboy Bebop if you like--but I don't think you can argue against the fact that it's got some real depth. There is so much to its world and its characters that the show can be both subtle and in-your-face at the same time.
The main strength of the show is that it doesn't rely on dialog for its narrative. Many of its best stories are told mostly through visuals and music. Not only does this make it a great television show, but if handled with similar finesse on the big screen, it could make for a great live-action movie.
So how would a movie work? It shouldn't be too obviously high-budget--ditch the excessive CGI--but as gritty and violent as it should be, it should also be stylish. Tarantino-esque, but Reservoir Dogs/Pulp Fiction Tarantino, not Kill Bill Tarantino. That's just going too far.
Structure should function somewhat like the show. Perhaps allow for three individual story arcs with the same characters. The three arcs can be linked by a common plot thread, leading up to a singular climax. Imagine Asteroid Blues and Waltz for Venus, for example, being loosely connected to each other, both dropping hints about Vicious' (the chief villain's) return--leading Spike to confront him in a climax similar to Ballad of Fallen Angels.
If you haven't seen those episodes, just imagine something like the first Sin City (not familiar enough with the second to know if it sticks to formula), but with the same characters in each individual plot.
A movie like this wouldn't be necessary, but I love this universe and just want to see more of it.