Wouldn't Balki and Cousin Larry be in their 60s by now ? The whole point of Cousin Larry's shtick was that he was this neurotic wide-eyed spaz while Balki provided his accented limited-English one-liners in that lovable, naive way of his. If Larry is still acting like that 30 years later....I'd say it's more sad than funny.....and if Balki hasn't mostly mastered the language and is still bringing up Mypos after 3 decades, while struggling to adapt to American ways, then we can safely say that he's (a) not bright or (b) severely living in the past.
Compare that to Roseanne and Dan...........who can still more or less act the way they did in the 90s, just older and more grounded versions (Dan with the sleep apnea mask......along with all the medications he and Roseanne are taking).
And Family Matters......wow, when that show went downhill...it went DOWNHILL. Urkel transforming himself into various people? No wonder ABC didn't want that show after a while......and even CBS was like "ehhh, maybe not" after just 1 season.