Here's some of mine:
-Ms. Canby finds a love interest (Murray) and starts bringing him around the house (much to Archie's dismay).
-Stephanie starts working at Ferguson's supermarket but is mobbed by people telling about her how much Archie is a bigot.
-Mr. Van R's daughter comes to town and reveals that she wants him to come live with her. He tells her can't....because his friends are at the bar and she wants him taken away to a psychiatric center. (Not to be humorous but to be dramatic).
-Archie's friends from WWII and Fuji, Italy stop into town for "Good memories". It is soon revealed that they are trying to buy the bar out from underneath him.
-Archie hires a black waitress...and begins to fall in love with her.

Some of mine:
-Archie getting remarried to his widowed girlfriend, Katherine Logan.
-Billie getting married to Gary, much to Archie's dismay.
-The Jefferson's visiting the bar. Since George mellowed as well, George and Archie would be on better terms. And, the Jefferson's would be impressed that Archie expanded the business into a restaurant as well.

I would have liked to see George Jefferson and Archie Bunker become friends.

That would be awesome.