Which court case are you thinking about that impinges on this right? My quick Google search only shows for recent relevant cases Weiand v. State of Florida (1999) which as far as I can tell re-affirmed the Castle Doctrine and in fact strengthened it a bit since it now applies also to "co-occupants" of a home (which it did not before in Florida.)
"While this certainly has a laudable goal -- I am wholly in favor of the Castle Doctrine -- are you sure that Florida doesn't already recognize this?"
Yes, I thought so, too. But I will certainly check and follow up and even if the doctrine is favored under common and case law, let's support those who would give it some statutory authority as well.