Most of Disney's and Warner Brothers' stuff has aged pretty well. Just look at Batman: The Animated Series. That was the first series I'd consider a kid's show marketed and designed for an adult audience, and it was a smash hit. Anything Steven Spielberg touched on during the nineties, as a producer, tended to be good. Guy knows how to push the right buttons in a kid's mind.
As for "Digimon: The Movie" sucking, what did you expect, OP? This is three movies recut and reassembled into one Frankenstein of a monster by the typically uncaring, cynical gits at 4Kids.
I'll direct you to JesuOtaku's review of the movie, over on That Guy With The Glasses. She almost does a shot-for-shot breakdown of why the thing sucks, and why this can more or less be considered as the textbook 4Kids approach to licensing and dubbing.
Back when we were kids, TV producers either knew what we'd find interesting, or they had a sense of genuine respect for the way a kid's mind works, and how clever and perceptive most of us could actually be. Today's producers are a lot like those in the early eighties: most of their shows are based on video game franchises or CCGs, so who gives a fuck about plot? Just toss in some bullshit Moral of the Day after recutting the only *slightly* more inventive Japanese series that's available for syndication, and you're good to go.
Kids are stupid, after all. All they want is Mommy or Daddy's credit card, so they can buy more worthless electronic or plastic shit.
At least, the eighties' series occasionally succeeded at putting something like a plot together, enough that we'd start caring.
The best series I remember growing up to were Beast Wars, ReBoot and most of what came out of the WB animation pipeline at the time.