It reminds you of Ruination & Targetmaster toys? Not sure about the Targetmasters, but I know Bruticus/Ruination went thru a few remolds, mainly IIRC with Blast Off's nosecone. I know that Aron Archer(head of TF's at Hasbro) has said there are molds that have been lost or damaged. Off the top of my head, I recall Sunstreaker, Mirage, & the Constructicons, though, like you, I agree, they could easily make new molds, to re-issue them, & it'd be worth it as far as I'm concerned
I know I really want all the Season 1 & 2 cars at the very least. And there's still several, atleast in America, that haven't been released. I could pick up a japanese Hound, which I've always wanted since I was a kid
I think that's the only one I'm missing, that's been released as a re-issue, wait, no I think there were re-issue's of Ironhide, Ratchet, & Trailbreaker in Japan only. Plus there's Ramjet & Thrust that the US still hasn't gotten.
Now that I'm thinking about it, maybe I heard that Soundwave's mold was damaged, but thanks to the remold of Soundblaster, they were able to repair it. Oh, & Blaster was actually known as Broadcast in Japan, IIRC. And then later, Twincast. And I like Blaster.....mainly cuz of the show though.