There's a difference in being patient and seeing where this team is and what it needs.
This team has one of, if not the worst defense in the league but at the same time they have one of the best forward groups on one of the bet goaltenders in the world. Sure it's nice to be patient but defense takes a lot longer to develop than forwards and by the time our D are ready to be elite our forwards may be passing their prime.
^ This
The Avs also have 3-4 legit D prospects already in the system. Do they have top 2 potential, that might be pushing it, but there is some hope there and at least good odds that all will become at least good 4-6 depth D men. Get the top 3 guy now.
This current forward core, minus 2 depth forwards needed on the 3rd/4th line, which can be found via UFA, smaller trades from teams dumping for cap relief, or perhaps even in the system already, is ready to go. (plus just getting healthy with Winchester, McGinn, and Bords)
The D has EJ and Barrie who are hitting their prime, a few young up and coming rookies for depth, and a plethora of depth with experience/comfort in the system in Holden, Stuart, Guenin, and Redmond. Get a 28/29 year old D man in his prime signed for 3-5 years to put in the 2/3 spot and perhaps add another upgrade via UFA for the bottom pair and the D jumps into the top 15 at least in the league, if not top 10.
Varly is a top 5 goalie in the league when healthy, Pickard is a backup with potential, and Berra -- if you can't move him -- probably has a rebound year in him.