This Avs fan says no thanks to your counter proposal. I'd want no part of Lazar, never liked him as a prospect and I still don't see the upside.
However, I DO like the OP's proposals, I think he made some really good proposals. I have always been a big fan of Chlapik's 2-way game and for that reason I'd be interested for sure. The Avs are also lacking big wingers with size and there were rumours they were interested in Gagné at the 2015 draft. Kudos to you for taking the other teams' needs in consideration.
I have to agree with my fellow Avs fans though, for any trade to happen, we'd need to see how the season starts before making a deal of this kind. I like both goalies well enough but I think Varly is the guy I'd stick with personally. He hasn't had a lot of help in recent years and shouldn't NEED to stand on his head to give us wins. Every now and again is nice but he hasn't been costing us wins, put it that way.
I will say that time isn't necessarily on the Avs side even though they don't NEED to a make a decision now, the closer they get to the expansion draft, the closer they get to being in a position to being forced to make a decision at some point.
Unless there is a major change within the roster, the Avs expansion protected draft list will be:
1F) MacKinnon
2F) Landeskog
3F) Duchene
4F) Soderberg
5D) E.Johnson
6D) Barrie
7D) Beauchemin
8D) Zadorov
G) Varly OR Pickard
I'd be extremely surprised if it was any different than that. The main question is which goalie they'll protect. I'd for sure prefer adding a prospect like Chlapik or Gagné rather than lose Pickard for nothing in the expansion draft. Depends what other teams are offering as well.