I’d rather evaluate each college individually based on their location and the plans and protections they are putting in place. The one-size-fits-all isn’t going to work for all colleges nor all students.
The earliest a vaccine has ever been developed for any virus is four years. Any estimates of having one sooner is pure speculation. Students can exercise the option to settle for an online education (easier for some majors than others), or they may opt to postpone their education indefinitely (perhaps until a vaccine is available). A poll posted in another thread indicated a majority of students would return to campus in the fall if they can. If the safety arrangements the colleges will be making are acceptable to the students and their families, they ought to have that opportunity.