I wouldn't call them pure "cap dumps", as they're still useful players, but I agree that that proposal sounds like a classic main boards "our quantity of expendable junk for your quality player" type of deal.
I think the Avs are clearly done. If they wanted any of the remaining UFAs, they would have had them for league min by now. And if there was a route to clear cap space, Tampa would simply outbid us for the privilege. Sakic is obviously quite happy with the roster, and even though 3C is still a weak point in my view Sakic must not see it that way or else he would have swung some witchcraft already to make it happen via trade.