I'd rather have a D like below than trade Barrie for magic beans, it's time to move towards becoming a perennial playoff team, and not taking one step forward, one step backward. Avs shouldn't be in the business of trading the D with highest ppg average - not counting human cheat code in EK - who is also a perfect fit for the way they play and is the BFF of their franchise player.
Zadorov - Barrie
Girard - EJ
Nemeth - Carlson
Barberio
Pairings above susceptible to change and Carlson on the 3rd non-indicative of him being the 3rd best RHD, nor should that pairing be looked at as a 3rd pairing. That D looks like one of the better in the league and as a strength to build upon and with the 1st line of Gabe -Nate - Mikko a solid foundation to become a perennial playoff team if not Cup contender. The holes on the roster would remain the 2nd line center - could be filled internally with Jost -, scoring winger, and a more reliable goalie than Varlamov health wise.