Mayhembob wrote:
There is still a problem that rarity of cards does not always match up with strength.
If rarity is taken into account people will just try to find the best common cards and win with those, and rares will get a lot less popular and drop in price.
And that's why cost is a better indicator than rarity. What's the most powerful common card for each domain? Probably creature removal / damage dealing cards. Ascent, Volcano, Lysis, and Sunburst are probably the among the most expensive commons and I wouldn't be surprised if they already went for more than some uncommons. And I also suspect you're vastly overrating the effect of a deck strength rating component on market prices. Before the ladder, did anyone care much about similar match ups?
Mayhembob wrote:
I don't think it is necessary to take deck strength into account, because it already is taken into account. The current ranking is based on a combination of deck strength and skill (what makes you win).
The current rating is soley based on your past performance. While it may take into account the strength of decks you've used in the past, it doesn't take into account the deck you're playing with now in a similar matchup. Again, a player can now lose a bunch of games with the default deck. Tank their rating. Switch to a deck loaded with Trunk Hermits, Hardarck's Thrones, Hill Giant Contractors, Caravans of Dreams, Ivory Spires, Dire Cave Crickets, or any other deck filled with 200+ gold cards, and they're suddenly much, much better than their "default deck rating" would indicate.
A 10,000 gold deck vs a 100 gold deck should not be a similar matchup unless the ratings were wildly disparate.