Agreed on the unlikely effectiveness of a vaccine.
The common cold is another example.
The flu vaccines are partially effective at best given the different strains of flu out there.
We will muddle through this, but an effective vaccine is not going to be a part of the answer imho.
Probably not since it has now been documented that eight sailors on the USS Roosevelt have become re-infected after having recovered once from the Wuhan Flu.
If having a full blown infection from the virus doesn't give you immunity then a vaccine for it seems unlikely to me.