I'm all about 'most likely' / 'most realistic.' NFL teams don't draft a QB high when they have a young top QB. And, whether fans like it or not, it appears Miami sees TT as a top QB. Second, that newly drafted QB would sit on the bench until TT was injured again (a fair debate), is injured so bad he has to retire, or retires of old age. On top of that, taking a QB high means another position of high need would go unfilled. Even worse, if another team wanted to move up, Miami could trade that potential backup QB to get a couple of picks to fill needs.
Now, I'll admit, 'most realistic' doesn't equate to 'guarantee' nor does it mean the world won't change between now and the draft. But, IMO, it's realistic enough, if it were an investment, I'd buy 'no high round' QB every day.
Don't know your position on any of this so I'm not calling you out, but I anticipate 'yeah, Grier will mess it up,' or 'but he's injury prone.' Don't care about those responses although I do worry about injuries. 'Most likely,' no high round QB.