His value is very low now compared to what it could be. I've watched him play and he has potential but with only 47 games played and 7 points he's not going to fetch much now. Maybe a 3rd or a solid third-liner.
Right now, he is still raw and unproven. But his potential is huge! He is fast and great puck mover, but that also causes concern for injuries due to his small size but I haven't herd any injury related problems with him so its not as big as factor yet. I'd guess anything above a 2nd round to a 3rd line player would do. But, I don't think he will be traded.
I don't think Colorado will trade him. He's in a perfect situation right now. Colorado has a good enough defense but if they need Cumiskey to come up and play a few minutes here and there to get used to the NHL, they can do that.
he's an interesting player for sure. his speed is tremendous -- he's easily the fastest player the Avs iced last year -- his puckhandling is excellent, and despite his small size he's not a poor defender. But he is really tiny, and his other skills -- namely shooting and passing -- are waaaay behind the rest of his game.
His ceiling is probably a 2nd pairing PP specialist guy, as he'll never be a strong enough defender to play big minutes. He's got a ways to go though to get there though. His value right now is probably what other people have said above -- established bottom 6 vet or a bottom 3 defender.
I hope he gets to spend the year in the AHL with lots of playing time and really works on his passing and shooting. If he does that, I think he'll be ready to hop into the Avs' lineup as soon as next year and really showcase that speed.
Finger is better at this point, because quite frankly Cumiskey is very, very raw still. That said, we're not trading him not because we have high aspirations for him, but simply because what we'd get back is likely to be so little that it makes no sense (we're pretty much OK as far as forwards and defense go depth wise, I think). Let him develop in the minors, hopefully progress in some of his skills, and maybe not too far from now he can regularly contribute in the NHL instead of giving flashes of talent.