One way to look at it is that we were three runs away from making the playoffs. We lost opening day 2-1 to Tampa and then we lost to them in extra innings on July 27. If we score two more runs on opening day and one more run in the first nine innings of that extra inning loss, we make the playoffs.
I'd be very surprised if they acquire an outfielder unless one of Mullins, Santandar or Hays are traded. With Stowers and McKenna already in the MLB and Cowser knocking down the door, I think getting an outfielder is very low on the priority list for Elias.
I think next year Stowers will be given a shot at first base, and he will be a 1st/OF player. I would hope the stupid platoon thing that was done to him this year stops as his splits are fairly even historically. With Mountcastle and Hays slumping often we need someone with a decent bat who can fill in both positions, and Stowers could fill such a role and get some significant playing time as such. Vavra is a bit more complicated. We have a need for a good 2nd baseman, but I'm not sure Vavra is the answer there. Urias and Mateo look to finish out the ss/3rd positions, and then of course there is Westburg waiting in the wings. With Odor gone I think Vavra gets more playing time at 2nd and around the infield in general. But I could also see 2nd base being a place where we bring in another vet, but one better with the bat than Odor.