Just pushed a new feature for testing here in MFN-1 - a trading block. Instead of shopping your players via the forums, the player card now has a checkbox to add the player to the trading block. You can see all players in the trading block by choosing the option from the player search menu, or by searching with the regular player search and choosing "trading block" as the team (like you can do with the draft class or free agents).
Let me know if anyone notices any bugs with the system, and also if you use it to procure a trade successfully. If all goes well during our offseason here I'll push this into the other leagues.