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There are some exceptions, but in general cartoons aren't as big an investment as they used to be for American TV stations, especially on broadcast networks, and that difference shows. Saturday morning and afterschool programs like the Disney afternoon up to the late 90's or early 2000's were a big draw for broadcast channels as kids were out of school and church, but as America got increasingly secularized and the channels got more competition from Cartoon Network (24/7 cartoons!) and the internet they dropped the budget for the shows severely, till you get the Fox Box which basically shows the cheapest kid friendly anime they could find. Budget's a serious concern for how a show turns out. I'd say Japan has kept up with some awesome cartoons in the past decade cuz cartoons mean something to them, but in America you basically have like three cable channels that have a near oligopoly on cartooning: Disney, Cartoon Network, and Nick. They can pump out junk if they want because the competition won't be that good and they kids'll sit through anything waiting for "The legend of Korra" to come on.

You got some good ones on that list. But I have to say Courage the Cowardly Dog was just a bad rip off of Eek The Cat. Disney killed Doug which use to be one of my all time favorites. Cartoon Network died when they added a show with real people as hosts, Nick died long before the flood of bad cartoons.. I wanna say around the time they canceled Zim, but that's just me. Pinky and the Brain died when they tried to cross over with Tiny Toon's Elmyra. The Addams Family cartoon never held a candle to the actual show. I don't know exactly when they killed Batman, but once they removed that yellow circle from around the bat on his chest the show started going down hill. Johnny Bravo, well for real you can only do so much with a big dumb womanizer before it gets old. Pokemon dies because it became a "Cash Crop" and they kept remaking the same pokemon and just gave them different looks and names as if 151 wasn't enough, last I checked there were like 655 now. The problem with not only Tom & Jerry, but also Loony Toons, & Scooby Doo was they modernized such iconic characters. In my opinion of course.