I'm reminded of the Rockman OVAs. When I first saw them, I (and I expect many others) were like:" holy crap! It's so official looking it's scary! Why did they not bring this over!?"
HOWEVER, when they brought it over it was... "Holy crap! This is targed exclusively to 5-8 year olds. And I'm over 16." I suppose that's the problem with MM. I like MM, but the PTB will never, ever make a game or product befitting an older fan. They'll slap a new MM in a new series, but never throw some darkness intot he origional.
Honestly? I saw just the first OVA back when it hit Youtube, a good lot of time back then. I thought "Sure, this is kiddy, but there were things more offensive to my intelligence in RS-MM".
For research reasons (no kidding), I looked it up again and ended up finding just the 2nd episode. There, they "crossed the line", so to say. I couldn't really turn happy-go-lucky with it, and I guess I was just somewhat enamored with the whole flavor of the first episode back then. The weaboo subtitles didn't help matters either ("HAY GUISE LES NOT TRANSLATE 'HAKASE' TO 'DOCTOR' 'CUZ THATS SO MUCH KEWWLER!!! GANBATEEEEE". Die in a fire. kthx). So I didn't even bother with the third episode, don't think I ever will.
That said tho, the Archie TMNT comics were pretty good. If they made a MM comic with that sort of level, I'm sure I could get into it.
An aunt of mine that lived in the US sent some of those my way. They had some wacky [parasitic bomb] (I remember this issue where the TMNT teamed up with a group of BIG FOOTS and this bearded fellow with a tight jumpsuit that resembled Chuck Norris), but it seemed pretty nice alright.