Should I remove the hard-science tag from this question?

I asked this question yesterday and the answers have been numerous (this site is awesome).

However, my question is not very well documented and the answers are mostly qualitative, and I don't think they fit the hard-science requirement.

Now, I still wish to incite hard-science answers, but I think it would be more representative of both the question and the answers to switch to science-based. I am ready to do some research and improve my question if necessary. Not that I'm downgrading my expectancy much, I have no work depending on this. I mostly wish to avoid a misleading tag.

Is it indeed science-based? What should I do?