I think a lot of people's gripes was the fact that the trailers gave the expectation that there'd be a lot more He-Man when the first half the season is based more around Teela.
I think these complaints are stupid too. That's not why I was disappointed.
After watching the first half-season a second time, I think my peeve arises in the development of its ideas. I find Teela's character arc difficult to believe given her choice revolves around a single-albeit-important event. There's a lot of unspoken, unwritten background information that a casual fan like myself did not quite grasp. And there's a whole lot going on that could have been better developed. The half-season could have easily have been a full season of material.
This is similar to what I found in the War for Cybertron series. And it is the opposite of what I concluded for the failed Thundercats reboot. So, yes, I definitely wanted more because there was so much more there to be done.
Also, they could have done a full reboot, as they did with their other successful Filmation series.
I don't know if this got lost in the shuffle (shuffle, noise, vitriol), but I never minded the idea of anyone saying, "Hey, this thing is awesome and we want to feature it." I think it's a great community-building idea, and I hope you keep doing it. Even if people disagree, they will know what you think is good.
The big explosion over ideas was because of the prerequisites.
My youngest child came home with a pilgrims and Indians themes project in kindergarten this year school year in WA state. Which was horrifying to me on many levels.
Public school instruction in the US is extremely fractured, not only state by state but district by district and school by school. (My older kids' elementary school would have NEVER done that, and also at the time was the main site for a native american students and families group for the district, and those parents very generously shared resources with the teachers, students, and other families about PacNW history and current culture!!)
There is such a strange deviation in how we teach people on a state-by-state basis. I spent my pre-teen through high school period on Maui, wherein we did explicitly discuss American colonialism and the annexation's effects on the modern day. That said, we absolutely did not discuss anything in lengthy detail that solely affected the mainland. This made it surprisingly frank, like in US history the teacher said "The Civil War was about slavery," and that was that. When I was in early elementary school, I lived in Georgia in which the textbook used was like "here are the reasons why states' rights are important..." so you can imagine how much unlearning happened in middle & high school there.