I think that SP is the biggest need, as per your comment and Jimmy's article. Trading for one would be a disaster, both from the aspect of RH/KW getting humiliated once again in trade, but also given that there will be needs at the TDL. And that's with the already-depleted MiLB system.
I also agree that whoever they get for 2B will be disappointing, be it Miller and him being ancient, or Villar's questionable glove. Just get a warm body that won't fuck up the clubhouse, and who can bring cromulence to the position. Honestly, in looking at what's available in the marketplace, I think we should be happy if they don't add negative WAR to the position, and/or are forced to overplay Leury.
But asking this FO to first win a negotiation vs. Boras for Conforto, THEN win a negotiation against Billy Beane or a 33 year old, pre-injured Bassitt whose numbers may be artificially inflated due to pitching in Oakland is suboptimal, TBH. Especially in a shortened FA period.
For SP, I'd look at: Kershaw, Greinke, Rodon, Pineda, Perez, Kikuchi, or Kim. Find the best one at the best price first.
For RF, after securing a SP, I'd look at Conforto or Suzuki, or possibly Pederson; I'm more interested in someone being able to field the position/reduce wear and tear on Robert, TBH. But I wouldn't squander time chasing one of these while whatever value in the SP market is swallowed up by our enemies before we can get a SP.
Lastly, for 2B, either Miller or Villar; both kinda suck, but that's what happens when your FO does stupid things.