Yes. If the Simpsons only has two or three seasons left before ending, Sideshow Bob should be in some of them. His character is just so funny. And that voice!
I think Kelsey Grammer does an extraordinary job voicing him, and it's no wonder Sideshow Bob is a critically acclaimed character. Some episodes he's been featured have been considered the best episodes not only of the season but of the series. Such as Black Widower and Cape Feare, my personal favorites. Of course, there's always Brother from Another Series which unites David Hyde Pierce, who plays Niles Crane, Frasier's, played by Kelsey Grammer's, brother. He plays Cecil, Sideshow Bob's brother, and their bickering attitude is just like their relationship on the show! Even though the later seasons were losing their luster, the Sideshow Bob episode, The Bob Next Door, was amazing! lol
Anyway, I'm rambling!! Write an episode for Kelsey Grammer and David Hyde Pierce!