They should be able to win Kansas at the very least, possibly even Nevada or Wisconsin. Not taking anything would be very bad.
It'd also mean Dems would be in a better position on the state level than 2018 and arguably since 2010.
While Dems will prolly get the default flips of MA and MD, I rlly don't know how much that matters in reality because both their R govs were pretty moderate and the D supermajority legislatures had full control when they wanted it.
If Dems gain AZ and lose KS, I'd still say that's a slight improvement for Dems since there's no way the GOP is winning a supermajority in the AZ legislature, especially if Dems are winning statewide.
It's really funny how Dems being in such a poor position in legislatures to begin with means they aren't really defending much on that front (though neither is the GOP). Infact, I wouldn't be suprised if no chambers flip other than the AK House.