I only watched season 1 and watched a few clips on Youtube.

Based on season 1 it was an interesting show. I liked the Hydra stuff. The chracters were okay and honestly it wasn't how I thought a SHEILD show would be. Still, its okay.

Based on clips, it was cool to see the Ghost Rider. The effects were good for a TV show. Absorbing man was wasted, Deathlok was wasted. Graviton was wasted. The show based on the clips were okay. Nothing that said "I gotta watch this".

Overall, I'm sure it had a solid run. 7 years is enough for a superhero show anyways. SHIELD was at first part of the main MCU timeline, then out of nowhere it wasn't. They should have had more guest appearance from SHIELD to MCU. It just felt like SHIELD didn't matter that much.

Last Words: the show was Agent Okay.