Here's how I see it:
The JD choice will set in motion a lot of what we can and will do.
There are somethings we must do, no matter what he chooses, but the amount of money available would change depending on his $19.4M salary ($22M on lux tax) vs zero.
We need a solid SP'er- hopefully a #1 or #2.
We need a closer.
We need starting pitcher depth and/or pen depth, depending on our plans for Whitlock & Houck.
JD or not, we need another solid player that can play 1B, perhaps just vs RHP.
No JD? We need a DH.
That is a lot of needs that would be super expensive, if we filled them all by free agency. Here is where it gets tricky: we can either trade youth to fill a slot or two or count on filling one, maybe two, of these roles from within the system.
I'm thinking Bloom & Co would love the second option to work, and they could hedge their best by signing some depth to "cover," in case an in system player fails... kinda like what Marwin and Santana were, this year- YUCK!
Who are the most likely in system players to fill a key role?
Dalbec has to be near the top of that list, even if just as a platoon 1Bman that can lessen the cost of needing a FT 1Bman.
Houck and Whitlock look like the obvious choices to fill a SP'er slot or two or a SP'er and pen slot. Do we want to pencil one in as that solid #1 or #2 SP'er and the other as our 2022 closer? Maybe one, but both? (And I say maybe one with a lot of doubts.) I'd rather see Houck and Whitlock fill the #4 slot in the rotation and Ottavino's set-up slot. If they do better, then yeah for us!
Duran does not really fill an area of need, assuming our OF is Verdugo, Kike and Renfroe, with Arroyo as our FT or near FT 2Bman. We'd need a 4th OF'er, and since Kike can play 2B when Arroyo is out or covering SS/3B or sitting as part of a Dalbec-Arroyo type platoon. We might decide to trade Duran. (I'm not for that idea- just sayin'.)
So, IMO, we get a #1 or #2 SP and a closer, use Whitlock and Houck to fill the rest of our pitching high need areas and then decide on what to do about 1B/DH. Dalbec can fill a partial role and maybe improve enough to fill a FT need, but I do like the idea of keeping Schwarber- JD or not.