Thought on last episode

In the finale, the mansion gets sold, which is fine. However, there is a part where Will tries not to sell the house to potential customers, two groups of which are famous characters from other sitcoms (Arnold and Mr. Drummond and then the Jeffersons and Florence). I didn't think that was such a funny idea because you'd want to know a few things:
1. Why would Arnold and Willis still be living with their dad 10 years later?
2. Where are Maggie, Sam, and Kimberly?
3. Why are George and Louise in Bel Air? Had George retired and sold his cleaning stores?
4. How are the Willises, Bentley, Jessica doing?
5. Since the Jeffersons appeared in that awful episode from the previous season, wouldn't Will remember them, and vice versa?


Yeah, I know. It's supposed to be funny because it is just a show, but I don't like it when sitcoms do this sort of stuff. Actors should know better than to even accept these parts. I guess all the actors wanted a paycheck or something. What else were they doing anyway in 1996? Not much.