It's so-so. It's definitely definitely better than Iron Man series from the same era, which I was not able to rewatch even past episode. Unlike Iron Man this show was not meant for fans who already knew all the lore, so it properly introduced the characters. It is still quite rushed, and that also makes it feel way more disjointed even compared to X-Men. Especially in terms of inter-personal relationships.
While Galactus and Silver Surfer introduction is canon, as well as the way Nova joins Galactus (if I remember correctly), I definitely enjoyed the approach Silver Surfer TV show took more. I did feel a bit sad, that we did not see FF in that show, but it made the characters (yes, plural, since I include Galactus) seem more... Dimensional.
Speaking of cameos, this show had a lot of those, and I would say most of them were just poor. There were easter eggs, that looked fine, but when certain characters were thrown-in for the whole episode or significant portion of it - that felt forced. Especially Ghost Rider. I also do not get the point of changing the art style in 2nd season, and even less so - the point of changing the opening. 1st season opening was a banger. Unlike the rapping or whatever in one of the 2nd season episodes.
