It is RandomLand... so make everything less random and remove the gross and weird parts. They already got rid of the biggest offender (Red Mist Squidward).
My personal least favorite is Choir Boys, and while I’d love a well-written episode, a non-fillery episode, an in character episode, or an episode with more than one gag, I do like Slide Whistle Stooges, an episode where nobody is in character and it has one joke, but is salvaged for its good comedy. Make Choir Boys really funny and I’d be fine with that.