Put in a feature that allows for a September DL
in September Major League teams don't have to use the DL, but have players who are done for the year. I would like to see Yahoo place players on the DL during this time even when they aren't in real life. Especially if it is well known that said player is done for the year. Since the playoffs occur then this is a big deal for dynasty teams. They aren't going to drop Clayton Kershaw or Stanton just so they can add some free agent player for a few weeks, so they have to play a man down, sometimes two or three.
Yahoo has had this feature in hockey for a couple of years now. It's called IR+. No reason why they cannot do the same thing and have a DL+ for anyone marked Day-To-Day
The rule for a player to be place on the DL is their team must officially put the player on the DL. Don't look for this to change, and yes, this is frustrating in Sept.