Quoting: Caerii
The Ristolainen trade was an overpayment, but Dumba is also much better than Ristolainen, and has an additional year.
The Reinhart trade isn't a good comp because should come with an extension, Reinhart didn't. Not to mention Fiala is a better player.
I'm not even sure why you mentioned Kuemper as it pertains to a Talbot trade. Kuemper is in another league. Talbot would return maybe a mid round pick. Talbot level goalies are a dime a dozen.
Point being, those trades tell us nothing about what these players would return.
Risto actually puts up points as an offensive d-man, where Dumba hasn't. Dumba has always had much better partners (and overall team) to cover his flaws too. The extra year for Dumba helps, but they are closer than people realize.
Reinhart and Fiala put up the same numbers, play the same position, and are both RFAs. The only real difference is Reinhart can play center in a pinch.
Talbot is a slightly above average goalie, teams need that, and he's a cheap cap hit. MN can retain some salary and take back some bad cap; that'll get a 2nd+ for him.
If you're going to sell, then sell off what isn't part of the future. Talbot is not part of MN's future. Dump Zucc and Spurgeon when they lose their full NTC's. Foligno and Hartman go at the TDL (this year or next). Greenway is a maybe to keep, depending on the term he'll sign for on his next deal.
Either commit to a 4 year tank or don't. Sitting on the fence just leaves MN picking in the 8-10 range every season and continues the good, but not great they've been their entire existence.