Yes. It is with many teams. And many teams use their long RP'ers as spot starters or slotted as their #6.
If we sign 2 really good pitchers, and we get lucky with both starting 31 games, each, we'd still need 90 starts from ____.
Let's say with some more good luck...
28 Bello
28 Pivetta
We'd need, best case scenario, 34 starts from ...
Sale
Houck
Crawford
Whitlock
Walter/Murphy
Are we to expect more good luck and get 24 from Sale and just 10 from Houck or Crawford and be able to keep Whitlock and the other one from Houck/Crawford in the pen all year?
IMO, we'd end up using 12 pitchers again, including all our long men plus Walter, Murphy and maybe Drohan or Wikelman.
Even 3 solid SP'ers does not guarantee keeping 2 or 3 of those guys in the oen, all year, but why not try to plan on just that? The 3rd guy could be a durable #4 type.
SP1 FA
SP2 FA/Trade
SP3 Bello
SP4 FA/Trade
SP5 Pivetta (who has been proven to start many games and give a lot of IP)
SP6 Sale
I'd rather have to get to my 7th SP'er not my #6 to start dipping into my long relief group in the pen.
I'd love to see, what I think might be revolutionary (at least for the Sox) to have a solid 4 man long relief pen and 4 man short relief pen combined.
Short: Jansen, Martin, Wink, Schreiber (AAA: Bernardino, Kelly, Robertson, Guerrero)
Long: Houck, Whitlock, Crawford, Pivetta (if Sale is healthy) or Murphy (AAA: Gambrell/Walter/Mata/Drohan/Wikelman)
To me, this is a top 5 or 6 pen in MLB. Why not plan for that?