To build on this, the most recent starters in St. Paul were Plutko (shelled), Henriquez (bullpen game), Boushley, Matthews, MacLeod and Morris (first start in AAA, after only 10 in AA),
For the Twins, we have Lopez and Ober as "established" guys, followed by SWR and some combination of Festa/Varland/Matthews in the last two spots, plus Paddack on the IL.
I've no problem with letting the young guys roll (and would like to see it), but we have more than 40 games remaining. The odds of any major league team making it through a 40-game stretch using only six starters are pretty slim. Add that it's the end of the season, amidst innings counts and a season's worth of fatigue, and they're even slimmer. Paddack has not returned to throwing yet, so the likelihood of him starting many games (and lasting long) is pretty small.
If (when) it comes to that, I'd rather start Hill than one of the guys in the first paragraph.