I think Gor is still living in 1998.
As jixby already said, the show isn't supposed to be animated by fucking picasso or something. It's not a kids show, and so they don't need flashy animation to keep the target audience hooked. It's a show that relies on it's writing alot more than it's action.
I really can't decide wether the show is funnier now than before, it's a tough comparison. It's evolved into something else. It always had some subtle social commentary, but it wasn't the main focus of the story.
The oldies weren't as smart, but alot funnier in my opinion. Season 2 being my favourite with conjoined fetus lady, prehistoric ice man, chicken lover and a whole bunch of others that are unmatched by any earlier or later episodes.
I think it has enough steam in it to go on strong to the end of this new contract, but I'd like to see it bow out gracefully at that point.
And no, I don't want a movie sequel.