First one...yet again!
Wow! I'm really impressed that you took my resoundingly (and perhaps unduly) negative feedback and took it as a challenge!
So first up - great idea! Sunder is a really great character who is always overlooked even by fans, and it's great to see a video centered around his story. If it were me, I might have used clips from both his two episodes...but that's just me.
You used a song with understandable lyrics and a clear message and build your video around it, which completely works. I really liked the line about "the strongest among you doesn't wear a crown", because the band probably meant it as a reference to oppressive royalty, but it takes on a new meaning following the scenes of Sunder suiting up next to She-Ra.
The song did have a sort of urban reality quality to it, though, so it was a bit jarring seeing the colorful Filmation super-heroes being juxtaposed to it.
If I could suggest anything, it would be not to always try to match-up the images according to the lyrics in the sense that He-Man and She-Ra would pop up on the "brothers and sisters" part. The first and second times they popped up, I felt it you'd cut a previous clip short, and doing that messes a bit with your pacing.
And yet, I liked the speed of the brother and sister clips all three times they popped up, but it felt like you'd spliced them in over a previous cut of your video, if you know what I mean. The flow between that constant and the other shots needed a bit of work.
All this to say, I really, really enjoy She-Ra themed music videos and especially new episodes made by fans using existing animation. That's really clever and fun. I can't wait to see your others. Please keep doing them, and I'll be sure to offer my thoughts. When you've made a perfect video, I'll be sure to tell you I really want you too!