Having the AAA team across the river in St Paul has always seemed like a no brainer. Do it. As for fewer minor league teams, this has been a trend for decades.
They were well ahead of schedule paying off the bonds as of 2017. https://m.startribune.com/hennepin-county-to-pay-off-target-field-debt-a-decade-early/410730375/ Can't find current projections.
I think the 28 man roster influenced pitching decisions a great deal. It's certainly true that stater innings have been going down across baseball for years, but this year is an anomaly.