Just a simple strategy question. If you like the champion bound card, why would I continue to grind the legend level to get an auctionable card? Wouldn't it make a lot more sense to stop at champion and just buy the legend if you're sitting on a stack? Then you have them both.
Other than trying to not have to buy the legend or make a little quick cash if you don't like that card, what's the point of grinding past champion?