My previous neighbor had a pack of six Corgis. They were very cute, but extremely noisy barkers.
That and MANY other things:
Barking
Shedding
Not "great" with other dogs
Not good with people (scares them by barking / growling), certain people OK, some not
Strange fears / behaviors (attacks when you swing in the playground or ride roller skates)
Not "cuddly" / more independent
Leash aggression
Too smart (can outsmart you / do half-a$$ed behaviors to figure what minimums are required to get the desired results)
Health problems (back surgery, failing of back legs)
Herding issues (hasn't happened to me) - strong prey / chase drive, nipping at things
Also, the local blind dogs place stopped using them as "deaf dogs" - that is a good indicator. They basically thought "Hmmm. What happens if the phone rings and I DON'T tell my owner to pick up the phone? Nothing? OK then I won't tell my owner anymore."
If "adorable" was my only requirement, and I didn't care about shedding, I would want the following:
Newfoundland (Newfies)
Visla (Hungarian)
Weimeraner
If "shed free" was my only wish, I'd want:
Labradoodle (half Lab, half Poodle)
If "smart" was my only wish, I'd want:
Nova Scotia Duck Tolling Retriever (aka Tollers)
Burmese Mountain Dog (Burmers?)
Belgian Malinois