Interestingly, Kirby Puckett #3 and Robby Thompson at #52 were the only two picks outs of the top 52 to ever become regulars in the 1982 draft. Only 5 other picks in the top two rounds even played in the majors.
I expect Mountcastle will be a really good hitter and an average first baseman defensively. I expect him to play few games in left field because Hays, Mullins, Santander and Diaz are all better defensive outfielders than Mountcastle. I expect Mountcastle will play some at DH.
Puckett had a career .318 batting average and got a major boost playing in the Metrodome, where he hit .344 at home for his career.
That's probably not possible playing at OPACY, but round that down to .290/.330 and I'll take it. And Mountcastle might improve his walk rate and increase his batting average & OBP splits.
Honestly, it’s anybody’s guess what they’ll do. Besides the question of how many people get vaccinated and how quickly, there’s also the question of how fast the virus is spreading as of March/April/May. The owners are going to want to minimize the number of games played without fans (or with very limited fans). And whether fans can attend games is not really in their control.