Seasons 6&7 are almost
as good as the early stuff.
Season 8 is just "okay." That said, "Moebius" is a lot of fun and the true series finale, as far as I'm concerned.
Seasons 9&10 are, IMO, two of the worst seasons of SF&F television ever. And, yes, I'm fully aware there's been some truly awful garbage to come along over the years.
"Hollow" are the Ori.