i agree about the QS comment, i wouldn't change the public leagues from the 5x5 standard, but it should certainly be an option for private leagues.
just to be clear, heres wikipedia's definition of a quality start.
"Quality Start is a relatively new baseball statistic developed by John Lowe. It attempts to gauge the number of "good" starts that a pitcher has. A start is defined to be a quality start if the pitcher pitches at least six innings and allows no more than three earned runs."
personally i hate the win statistic, it often relates tenuously to how a pitcher has performed, and quality starts atleast removes the pitchers teams offensive performance out of the equation. i think it's hard to come up with a reasoned argument of how its less valid then the 'win' statistic, flawed yes, but the current system is more so.
i do like the trading block being more prominent suggestion, as it is definetly an under used feature.
also showing where you've gained/loss point in the roto catergories would be cool. how about this, a graph of how the rankings varied over the course of hte season. either split by all teams for a single stat, or all stats for a single team.
showing how many innings left for each team on one page (the detailed standings page prefferably) would be very useful in roto. i hate having to look through various pages to check where i'm standing relatively for the k/win catergories, so thats a good idea.