This didn't even feel like Willow. It felt like people were attempting to use what little clout the franchise had and use it as a vehicle to introduce a story/characters that should've been written into their own series in the first place. Here's some issues:
1.) Willow isn't even the main character. Imagine going to watch Wednesday only to find out it's about her friends, and she's just kind of 'around'. That's what you get here.
2.) Remember the beautiful orchestral music from the film? Gone. Replaced by completely inappropriate songs, many of which are terrible covers. Hearing The Beach Boys in a high fantasy setting completely detaches you from the show...or Crimson and Clover during a weird forest rave. There's a reason the fantasy genre generally sticks with basic music...anything else feels out of place.
3.) The series changes things with little to no explanation. Why has everyone aged decades except one specific character? Why do certain creatures suddenly have an extensive vocabulary and look completely different? You'll be left with more questions than answers.
4.) The forced modernization. Every race and sexuality are represented. I've said before, diversity is great but not when it feels forced. When it feels forced it's almost as offensive as no diversity, because you're essentially creating 'token' characters. There also shouldn't be social commentary on war/pollution in a fictitious world. We're watching a fantasy series to escape our world for a while, not to be reminded of what exists in it.
Bottom line, I'm fairly confident this series won't be renewed, and with good reason. Warwick Davis deserved way better than this.