This may sound crazy but hear me out. There are a lot of things that make this show great. The character development. All of the characters grow each season and are completely different from the start. Melinda may was cold as ice in the beginning and ended up falling in love. Fitz was soft as ice cream. Ended up catching bodies/making hard calls and getting the girl.

The cohesiveness of the seasons. Each season was tighlty connected. We were getting call backs all the way from season 1 in the final season. Even the formula that saved coulson was a result of the Kree who were the big bads in the later season. Also gravitonium was teased in season 1.

The villians all made sense.

On my 2nd watch I realized it was way more connected to the MCU than I thought.

It was actually very funny and intense at the same time.

They nailed the time travel and I hate time travel shows.

Had a complete ending

I could go on and on. Let me know your thoughts.