Don't write off Falter for next year. He got a taste of ML hitters, and he's probably not far away, it's not like you're asking him to be a top 3, you'd be happy if he was an inexpensive 5th/6th starter.
Wheeler, Nola, Suarez, ???, McGarry/Falter, SD, Brogdon, Nelson, Bellatti, Alvardo.
Plassmeyer and Sanchez as candidates for bullpen depth, Miller/Morales though both probably start the season in Lehigh.
So you need a 4th starter and 3 BP guys, 2 of which are 7th inning plus quality.
You need one middle IF, worse case is Guthrie/Maton/Sosa/Kingery - with Harper back if Marsh can be salvaged they can carry a good field/no hit IF, but two would be pushing it. That assumes Stott discovers his hitting mojo, which is a pretty good bet.
So they can go big or go deep, depending on the market (that is, one mega-contract or 2-3 good contracts).