You have HIT some important unanswered questions.
CAN SANO PLAY THIRD. We have 20 games to figure that out, right now. Let him make 20 errors. But play him everyday. The move to the outfield was a mess and screwed up the twins bigtime. We ended up losing Arcia (maybe no loss, but then we blank out Walker for a looksee). But what if we had opened the season with an outfield of Arcia/Santana/Rosario. But then we had the Plouffe mess of where to play and Park at DH and...the Park decision was the real killer here. Buxton needed to start the season at AAA (as did Gomez and Hicks). Hindsight kills.
CATCHER OF THE FUTURE. Man, I would've started the season with John Hicks as backup and Murphy regular at AAA after spring training. But Murphy comes up and stinks, Hicks disappears because of the roster mishap that shouldn't have happened, and we see a lot of a guy named Centeno. We start the 2017 season with the same questions, but no Suzuki, which is a blessing in the long run.
TREVOR MAY. Even if you were going to send him to the bullpen, you groom him to be Anthony Swarzak 2016. You have him pitch multiple innings. None of this one worthless inning a day for 3-4 days scattered throughout a game. You establish a role so if a starter goes down, he can step in. that didn't happen. And they even skunked on grooming him as a closer. The whole Jepsen mess was a disaster.
THE BULLPEN. In an era where you start to clearly define the duties, the Twins overuse Pressly and Tonkin, have no longman, no strikeout king, and Kintsler is the closest they have a ground ball guy but they made him closer so he can only pitch when it looks like we will win. Even signing a bunch of guys like Abad, Ramirez, Mujica, Boshers, Burnett, Walden...it did nothing but get us...Light...who we could've signed in the first place ages ago and needs to be protected or will probably be claimed and sent to the minors by another team.
POLANCO. Did someone think that the team that couldn't rid itself of Plouffe was going to get blown away on an offer for Dozier, so this guy played second ALL year at Rochester. He didn't play one minor league game at shortstop, and he needs to stay come 2017. It looks like he will stay, at shortstop, for 2017 AND 2018. He can always move to second if Dozier becomes too expensive and Gordon or someone is the new shortstop. Nunez was the best thing about the team in the first half with power, stolen bases, average and it didn't matter if he made the plays because the team was losing. Once he left, it should've been Polanco right away. The miscues can continue at short and third base if you don't improve the pitching.
THE BIG STARTER. It is Ervin Santana and will be so again. You hope he has one more year in his psyche. But being the #1 starter and not getting to 10 victories because....... When was the last time a Twins team had no winning percentage starter. Ervin is making good money and wants to make more as much as he wants to win. That no one blew the Twins away with an offer is beyond me. But I don't see Gibson OR Hughes coming to that spot in the rotation. We may see Berrios, may see Gonsalves, may even see Stewart surprise us...in 2018 or 2019.
THE JOE MAUER DILEMMA. A lot of money. His is a good solid player, but not doing anything thing...flashy. He's there. Being Don Mattingly now. Or Doug Mientkiewicz during his solid seasons. And he will remain there. You'd think if anyone would take him off our hands and if he has a chance to play with a contender, he would go for it. He was the dream of the team when we thought he would be our catcher thru eternity at best, a C/parttimeDH at worst.
After the 2016 season, we have no sure answers. We will be starting 2016 all over again in 2017. Can Sano play 3rd. Where does Plouffe go. Too many power hitters who strike out. A centerfielder that may/may not come to the ballpark and play. A rotation that is expensive but uncertain. A bullpen that is a total mess and all those prospect arms are, again, a year away. Do we stick with catching that is defensive or sign another old guy who is...an old guy. Nothing NOTHING was accomplished this year. Some guys shined after a year of not shining, but then the new guys this year may have an off-year next year. When will ALL the pieces come together and work together. 2015 was a winning season, a winning season just, and a surprise. It was something to build, possibly a tad on. But to die in a division which, on paper at the year's beginning was pretty even, but the Twins were still coming up behind because they didn't make many off-season changes - no one NO ONE thought they would outdo (still yet to see) their prior run of four losing seasons.
If one thing happened, Jim Pohlad recognized TOTAL SYSTEM FAILURE but is still stymied on how it got there and how to fix it.