Pokey J.Anti-Blockhead
For me, what made most TV shows, especially with R&S voice Billy West, so lacking compared to the R&S show was the absence of the Associated/Cinemusic/Capitol stock music featured on that show and on many 1950s-60s shows:.

It's odd that many people and elements from Ren and Stimpy still show up but ironic that shows are now done the way the old theatricals were, even for daily shows which must be nerve-wracking.

Ha! Wouldn'ty it be weird if such wannabes as Disney's short lived Brandy/Mister Whiskers, Cartoon Network's Cow and Chicken had the Jack Shaindlin, Philip Green, Raoul Krkausshaar, George Hornel, Bill Loose, etc.cues that were on Ren and Stimpy, six WB cartoons in 1958 due to a musician strike, many (not just a few or ten but nearly all) 1950s-early 60s TV shows-Dennis the Menace, Lassie,etc. like Ren and Stimpy did? :D

And Rugrats, the teen Nick shows and ALL other Nickelodeon shows-ESPECIALLY with them being the HOME of Ren and en it debuted in 1991?

Just a thought (It would be consistent and paying homage since they copy R&S to the point of using the voice of Stimpy and the later Ren Hoek)
Even in the two Yogi Bear shorts which John Kricfalusi directed in 1999 (A Day in the Life of Ranger Smith [the funniest of these two shorts] and Boo Boo Runs Wild) used very much the EMI/Capitol music scores (more exactly, the scores composed by John Seely, Bill Loose and George Hormel) which were very used in The Huckleberry Hound Show (Hanna-Barbera/Columbia Pictures, 1958-62).