Blake's 7 getting the remake treatment

This is true, and was part of the original concept for the show.

Wouldn't make a lot of sense though, since most of the characters came from the same place.

I see no particular reason why most of the characters couldn't have American accents.

There is a slight division of working class/upper class accents in the original series (e.g. Vila paired with Avon) which I don't think would work the same, but it's not hugely important.

Oh, and on casting, how about Claudia Black for Jenna? This is one character which could be improved upon I think.

Zen would work well with a deep, gravely American accent.

True enough with the accents, although the Federation did have a class system of Grades that were assigned to those born on Federation worlds. The Federation is nothing if not obsessive in controlling the lives of its citizens.

It was pretty difficult to improve your Grade, but quite possible to be downgraded. In the television series there are four Grades that are mentioned or attributed to major or minor characters - Alpha, Beta, Gamma, and Delta.

Villa stated that he's a lowly Delta Grade and that Blake is in the privileged Alpha Grade. Servalan mentions that Jenna is "a superior grade citizen." But aside from Blake and Villa it's never explicitly stated what Grade the rest of the other main characters are. The television series also mentions occupation based classes - Labor Grade (Free and Slave), Technician Grade, Security Grade and Service Grade.