Nearly uncharted territory. Shoulder injuries generally are bad. Still as you observed he gained effectiveness as the year wore on, in fact was pretty damned good late. I think he's going to be quite effective but can't see any way in hell he pitches 200 innings for us. If we got 160 out of him that would be awesome.
My over-under would be 130 or so (mindfact). There will be a limit on Stras, so there will be quite a few innings to soak up. Note that over history the Nats have used 10-13 pitchers a season. Maybe we have enough durable arms to cut that down a bit - say 8. That leaves innings for Lannan, Detwiler, and Maya or Purke or whoever else steps up.
To me, that's what Gorzelanny's for. There's no reason to think Wang won't last the season, but you'd be foolish to plan as if thats a done deal. Still, now with Jackson and Gio who should comfortably give you 200 each, Znn who should give you in that neighborhood, and Stras at 160, We're a long way away from relying on Daniel Cabrera to pitch meaningful innings for us. Even if you only get 130 out of Wang, that's roughly 22-25 starts. Jackson, Gio and Znn give you around 30 ish and stras does 25. That's 140, meaning pitchers 5-8 are starting 22 games. Det gets most of those, so to me, Lannan is utterly expendable now. Even if something catastrophic happens in May - like Gio or jax going down, you've got Detwiler as a piece before you get to the Maya, Stammen, Gorzo, etc.
Damn, now that I write it out, I really like the Jackson signing. We have real pitching depth. Is this what rooting for an actual major league team feels like?