I enjoyed 6 well enough, but 7 and 8 lost me completely. Bringing back the annoying, superior Kochansky and losing the gritty, mining-ship feel of the sets and costumes did not go down well with me. Moreover, I liked the limited cast of the original seasons, so bringing back the crew didn't work for me either.
I'm also going to say that the nanobots were some of the most annoying dei ex machinae I've come across as well. Magic tech is fine, but only as long as it doesn't become godlike.
And that's without going into the writing. As others have pointed out, Grant/Naylor made a great team. Either one on his own, not so much.
Maybe I'm wrong, and they could succeed in rebooting the series, but I very much doubt it.