But it seems that Most new Anime isn't worth watching. Now Compare Gundam Seed to Gundam Wing. You see the change. Just compare the art style as well.
Gundam Seed had emotional depth, amazingly fluent and detailed animation and asked philosophical questions regarding relationship and the duality of man. Gundam Wing had the most cliche archatypes I've ever seen in a mecha, choppy old animation barely better than the original Mobile Suit animations and the plot seemed designed purely to drag out the story, rather than progress it.
To be fair I never finished watching Gundam Wing- not out of a dislike for it though, purely circumstantial- but all the same Gundam Seed amazed me. Not on the standard of say Furi Curi or Evangellion, but still a fantastic anime, far better than the new Gundam 00.. Which has taken many steps back from where Gundam Seed lead the series.
And the animation examples you showed don't really support you. In each of the older ones there is a single-colour or single-shade, simple background. In each of the new ones there is a highly detailed background- Well, perhaps other than the crappy Naruto filler art. And I know that's filler, I regrettably remember that episode, with that guy with the lighting sword bull.. I remember it because that was when I stopped watching. Both new and old examples have little detail on the faces, but the newer examples are cleaner, they have less difference. The skin tones are also more accurate, although I'm not pointing fingers at the purple girl, I'm sure there must have been a lighting explanation for that.
Furthermore those images, obviously, aren't animated. Modern day animation is far, far more fluent with higher frames per second than older, by comparison "juddery" animation. This is most likely due to technological difficulties rather than the artist's knowledge or skill, but it is a factor all the same.
-----Okay enough on that post---
I'm going to hit y'all up with some Media theory here, though I forget the theorist's name, maybe some others will know who I'm talking about. He created the idea of a genre cycle; A genre goes through three stages: First it will be groundbreaking and unique, then it will be "classical" with well established conventions and target audiences, and finally it will reach "parody" stage at which point the conventions have become so well established that the genre may be predictable, and moreover this is pointed out in common media. Hense the Simpsons and other sitcoms taking the piss out of Westerners and sci-fi so much, because they're in a parody stage of their life span. You could also say that FireFly is in the groundbreaking stage, having created an as-of-yet unexplored hybrid genre.
Scream is a good example of a serious Horror movie that uses parody elements because it recognises such conventions aren't effective anymore, and of course Scary Movie is a good example of an all-out genre parody.
Anyway, this applies here. These conventions are not of anime; they are of fighting anime. DragonBall Z was classic age, Naruto/Bleach are parody age (Hense the conventions appear less and are occaisonally used in a mocking way) and hmm.. I guess Yu Yu Hakusho may have been ground breaking stage, I'm not sure how far back that goes though.
The point is not all anime is like this. These are parodies of the fighting anime genre, which has entered its parody stage- and has been at this stage for a good 10 years, maybe less. Hence why we're getting new, creative animes like Death Note (To be fair there is at least one parody manga of that around already, but it is very easy to do so with a series that takes itself so seriously) and Gundam Seed, which was certainly ground breaking, but after Seed Destiny missed the point completely I doubt there'll be another anime quite like it.
ROW ROW FIGHT THE POWAH, and by that I mean Tenga Turra Gurren Lagaan (or whatever) is like Scream- it's a serious anime, with somewhat meaningful messages, that uses parody aspects becausae the conventions are no longer taken seriously. Rather than try to stray the border line, like Naruto/Bleach do, of adding a ton of audience-pleasing conventional fillers but changing them enough that it isn't totally predictable and hoping no-one notices they decided to totally blast out of the genre restrictions and make the series so ridiculous that it parodied the conventions and made a good contrast against shows that took themselves to seriously.
Man I think I should stop here. Yeah I've always got more to say, but this'll do for now. Not all animes are like that, fighting animes are but those conventions are dieing out and new groundbreaking conventions are (slowly) appearing. Anime hasn't always been like this, and it won't always be like this either. Genres are constantly changing, and anime is no different.
*edit* Just stumbled across a good example of genre parody, of overly established conventions etc..
http://www.questionablecontent.net/comics/1350.png
Yeah I read that comic, it used to be funny..