Well, I tend to think of RAH as having lasted well beyond 12 years. Technically, that figure format ran through 1997-98, 2000-2002, and continued to some degree (Comic packs, TRU multi-packs, etc) all the way through the newsculpt era right up to the 25A-style. Technically, it STILL continues, if one counts the Club offerings, which I do.
However, the original Real American Hero line did have a rather specific twelve-year run.
Sgt. Savage, and for that matter G.I.Joe Extreme, I'd be less inclined to describe as a blip and more as a fart.
However, I do agree that that black tank was cool -- and looks even better with Cobra logos on it. I also rather liked the plane.
I won't get into the occasional bashing that is being levied against the original RAH line by some who now declare a distinct preference for the 25A-style figures. My own bias would show through if I did. However, I will say this -- if it wasn't for the multi-decade success of the "melon-heads" or whatever...
... the 25th Anniversary line never would've happened.
(Same argument I used on certain 12" afficianados who loudly hailed the return of the 12" G.I.Joes years ago and hoped it would spell an end to "those pathetic little guys". If it hadn't been for the success of the "little guys", the big guys never would've come back. Granted, if it hadn't been for the success of the original big guys, I doubt we ever would've seen the little guys, but this is getting monotonous...)
As to the future? There's a few vehicles in the year ahead that I might like, but as to the concept as a whole, I think that is almost ENTIRELY dependent on the success of the movie. I am sure there will be a massive blitz of movie-based G.I.Joe product next year, with Hasbro hoping that it will be at least as successful as Transformers.
I'm not as certain. Transformers, although it has undergone a number of conceptual overhauls over the past several years, has remained a fairly consistent toy product, and one of the most popular out there. The movie took a toy concept that was doing well and sent it right into the stratosphere. The matter is different with G.I.Joe. Although the 25th Anniversary line has garnered some attention, I think that any of us would have to agree that G.I.Joe is not what it used to be by any definition, nor has it been as popular as Transformers for years, just based on the amount of shelf space it has -- and is -- being granted in toy stores and toy departments.
I think the future of G.I.Joe is riding very heavily on the success of the movie. I am personally quite skeptical about the movie, but then, I'm skeptical about MOST movies that are based on pre-existing properties. We'll see what happens.