I watched the Premier repeat last night, especially after reading good reviews here. It wasn't bad, but I wasn't nearly as impressed as most.
I've never seen The Avengers, so any background or tie in was completely lost on me. It was pretty much as I expected: a bit self-important & full of itself. The lead guy was much better than the previews indicated. In them he seemed like a snotty demeaning jerk, but on the show he was much more professional & competant seeming.
I also liked Lola, both the "Don't touch Lola" line & it's delivery, & the fact that she took off & flew at the end.
The other cast seemed a bit generic to me, except for the Melinda May character. She stood out.
Depending on what shows it's up against I'm willing to watch again, but if it's up against a few of my keeper shows, I'll skip it. I don't mind Super Hero shows, but I'm not big on them either.
I'd rate it a "It's OK, but not wowwing."