What shows would've done a good crossover with TAGS? The two I think would've been good would've been the Dick Van Dyke Show and Green Acres

One crossover show could have been Beverly Hillbillies, they could have been the rich cousins of the Darlings.
Also, the Hazel Show, Hazel could have been Aunt Bee's sister and they
could have visited each other, from time to time.

Would have been funny if the Munsters stayed a spell in Mayberry.

I can just hear Aunt Bea" Aaaaaandyyyyy!"

And Floyd" Yes...yes...ooh...ooh!"

I second the Munsters, though that is my other favorite classic TV comedy!

When Floyd sees Pat Priest " Oh my!"

How about the folks from Petticoat Junction coming by Mayberry?

Lotsa curves, you bet
Even more, when you get
To the junction
(Petticoat Junction)