And then absolutely screws you if any of those young players are good enough to be worth re-signing. You end up losing young, good players because you're choking on $80 million in defensive liabilities with declining offense. Maybe you figure that it's a problem you'll deal with if you're lucky enough to have it, but it's not like guys stay on minimum salaries for six years. Especially if they go super two they become relatively big earners quickly. For example, Rendon can't become a free agent yet but he's still making nearly $20 million this season. Harper averaged over $17.5 million the last two years. Even Roark is at $10 million on his final year of arbitration, which is a large part of why he got shipped out.
Padres also don't have a rotation, and their pitchers are relatively farther away from contributing in the majors. Also, TINSTAAPP. They'd be spending $105 million a year on Harper, Machado, Myers, and Hosmer, their young position players would be getting expensive by the time their young pitchers came up, AND they'd probably be relying on pitching prospects to mostly hit because buying free agent pitching would probably put them up above $200 million in salaries by 2022 or so.
I guess basically what I'm saying is that if they signed both, they'd be making like the Marlins/Rangers and trying to trade those contracts away before they ever became competitive.