Trading - Trade proposal expiration time
The ability to pick when a proposed trade will expire.
I play in multiple fantasy football leagues, and creating tools for us to better manage trades would be a huge improvement to the experience. Currently, when a trade is sent it will stay open until the other manager responds (decline/accept), it expires after a full week, or I cancel it from my team's page. The problem is that some managers who receive trades will purposefully leave them open to see if any of the players involved in the trade are injured, perform well, perform poorly, etc. during games. Giving us more options to manage trades would be helpful - expire after 48 hours, before the start of the week's games (Thursday), before the start of Sunday's games, before the start of any game involving any players in the trade, etc.
It would also be much more helpful to give more information on the "Football" page, where all of a player's fantasy teams are listed - are there any open trades, are there any lineup positions unfilled, etc. This would make managing multiple teams much easier. Leaving trades open is a distinct disadvantage.