I agree with the OP,
@erralyn those are all very real possibilities and each with its own downside.
I might add a fourth possibility, that Rosen is just promising enough to get us to invest in him, never quite get over the hump and never galvanize the team, and we miss the 2020 QB draft and 2021 QB draft and don't realize until too late that he simply isn't the answer. If this is the case, we may indeed do poorly and get high picks … then not draft a QB. Or, we may win 9 or 10 games, but always be around the edge of the wildcard spot with no real chance to win playoff games. Call that mediocre if you want, but it may be the most dangerous option of all, because it lasts longer.
Unless Rosen changes his approach and mindset, becomes a team-first guy and a hard worker, he will undermine what the coaches are trying to build with all these new young players. That is the real cost we have to consider. How Rosen reacts to this trade is paramount. He got mad when he was passed over in the draft last year … but he didn't change. Now he needs to change.