TBS Playoffs Insider wrote:"They potentially got worse defensively at 2 IF spots" does not equal "they got worse as a team."
Villar: .304 wOBA this year, .313 career
Schoop: .306 wOBA this year, .320 career
Trading for Villar for Schoop and moving him to SS is an objective downgrade, not just inefficient.
Moustakas can hit better than the Brewers 2B, but Shaw is also high risk for being worse than expected at 2B, they gave up a nontrivial trade asset to make that happen, and there's also not a huge difference in Moustakas's bat and what you'd expect from an amalgamation of existing 2B options(never mind other trade targets).
This isn't reflexive hating of a rival here, I'm the guy who was high on the Gerrit Cole deal, for example. That also illustrates that I might be very wrong, it's happened many times. But to me, trading for not good players so you can make your team's one elite strength actively worse is just dumb.