Pretty much agree here. I'd love the idea of some of these "Bonus Characters" from other lines being put out Origins-style and so long as they were easy to get I wouldn't pick nits about how they managed it. Even if it was a "sub-line" with a different title from "Masters of the Universe". How about, I'unno, "Champions of the Galaxy" or "Warriors of the Cosmos" or something in that vein, to keep the whole "It's the same as MOTU, but not
literally the same as MOTU" spirit of the original toys themselves, in a kind of tongue-in-cheek way that remains apt for what the product represents? You could even stick one'a those "For play with Masters of the Universe figures!" stamps on the front of the packaging without any danger of lawsuits, this time, since Mattel themselves would be the ones making them!
I mean seriously, if they created such a "sub line" or "sister line" or whatever and released four figures per wave, they could cover most or all of Sun-Man/Rulers of the Sun, Warlord, and Galaxy Warriors in just a few waves as those lines weren't incredibly large. I mean it's niche stuff, but hey, why not? They're already doing this one. Go for broke! "Masters of the WWE Universe" is ending, but it proved there was a demand for a second line in this style and scale even if it wasn't strictly MOTU.
C'mon, Mattel! Just give us a "Warriors of the Galaxy" line or whatever you wanna call it, and give us ALL this stuff!

Don't just stop at Sun-Man, that's just plain teasing.