If your QB is in a QB battle with Fitzpatrick and it's not clearly apparent who's better in the 1st week of camp, he doesn't have the ceiling to be a true franchise Qb, you can't pass on Tua for that.Tough to develop a legit rebuild plan until we know what we have in Rosen.
I am still holding out some hope that Rosen shows enough potential to make Tua/Herbert/Fromm/Love unnecessary. I would be ecstatic if the Dolphins get a top-3 pick this year, and are confident enough to trade it away to a team that is hyped over a QB. Continue to pile up the draft assets. If Rosen busts in 2020 while surrounded by hopefully better talent (from the 2020 draft and 2020 free agency), then you can use the 2021 draft capital (which will be increased from trading the top-3 2020 pick) to get your new QB. I’d expect there to be at least one or two top QB prospects that shake out in 2021 in addition to Lawrence, since the assumption is that no team will trade away the opportunity to draft Lawrence.
If we don’t end up taking the QB early in 2020, I’d use the two firsts on a pass-rushing DE and CB to play opposite X (I’m assuming we recoup a top-10 first in trading away the top-3 pick - so get that pass-rushing DE in th top 10). I’d use both seconds on OL, with the hope that you have a real conviction on both. If the available OL in Round 2 are weak, don’t reach - go BPA regardless of position. Second rounders are too valuable to draft a reach on need alone.
If Rosen isn’t a real option, then I’m assuming we’re drafting #1 and I’m taking Tua. With the next 3 picks, I am going OL and WR. I try to build around Tua on offense in the 2020 draft. I wait until 2021 to go heavy on defense.
Once concern I have about 2020 free agency - we’d like to think we can pick up some good OL in free agency, but the free agent class in OL is weak, and looking weaker every time another player signs an extension. Rodney Hudson, La’el Collins, Cody Whitehair are just a few OL that have signed extensions recently (off the top of my head).