I think you're correct. There are a lot of questions that we simply don't know the answer to at the moment. There are a lot of scientific questions that need to be addressed, such as whether you're susceptible to reinfection or not, if pre-exposure makes you less responsive to vaccination or not, how long vaccine immunity will last, and so on. There are a lot of questions that need to be addressed. Overall, though, comparing this coronavirus to HIV, for example, the chances of getting a vaccine for this one are better than for HIV.
On April 30th, 2020. See this statement in context.