As the player pool has grown in ATG trading has become less of a tool for team building. I love to trade but quite often people are not offering anything better than what is available for free off the FA wire. And just as often when I want a specific player everything I have of similar salary value is not much better if any than what is available.
Add to that if I have say 2 great shortstops most do not want to offer fair value because they know I cannot keep them both. I remember once having Ruth and Aaron in RF. All I got offered was useless bench players because as most argued one of those was destined for my bench anyway. So they were only offering stuff off their bench.
I think one thing that might help is a minor league reserve. If we could have 40 man rosters with 15 of our cards designated as minor leaguers it would make a huge difference. To limit excessive stashing we would be charged 10% or some other percentage of said designated cards. We would then retain rights to those cards and with a slight transaction fee be able to call them up in event of injury. Then teams would not be able to play the waiting game knowing we will have to drop players because I won't have to. Once i am offered fair value naturally I am pulling the trigger.