I strongly dislike the idea of floating ability score bonuses. In my opinion, that ruins the natural differences between the races. They all become these homogeneous things, simply for mechanical benefit.
Eventually, we're going to get to the point where players are going to start saying, "You can't hit me. I have a force field."
By definition, you would not have to use floating ability scores. They would start out as the default, and you could choose to swap them, or leave the ASI's where they were.
This is basically saying, "You can choose to have suboptimal choices."
