The problem with She-Ra is that it has a problem that a lot of shows have when the writers have great ideas for intrigue. The first season that was building up to everything, introducing characters and telling a significant amount of back story was very interesting and fresh.
This "Season 2" is anything but interesting *or* fresh. It's like they never even considered what the overarching story for season 2 would cover. So they bumble around for the first 5 or 6 episodes with almost Family Guy levels of padded dialog and reiterating filler over and over again.
The amount of story that was told in the sum of all episodes, if you cut out all the directionless filler would have covered about 3 episodes in things actually moving forward. Be it character building, world building, or otherwise. The only notable things that stick out to me are the Scorpia character moments, the origin of Bo and maybe some half assed explanation of Hordak's plan. Even the Shadow Weaver backstory was padded with stuff we already knew and didn't really show us anything about her character that was different than what we learned previous season.
If the season 2.5 coming up in August is anything like the first half I can't imagine this being a long lasting series. So far we're probably 1-1 and I just don't think we are seeing something with the staying power of My Little Pony's reboot.
As for MotU - the show was hot and cold. Kind of the opposite effect that She-Ra had on me - season one was a "play it safe" reboot that went back and touched on many of the stories that we already knew from the original series (and in many cases were told BETTER in the 80s stories). By the time Cartoon Network (like they often do) and Mattel (with its horrendous toy distribution) tanked it, it really started to shine in season two with new lore being introduced, but it was too little too late.
We'll just have to wait and see how sustainable this is with the conclusion of this story arc (such as it is)