It would be great if there were a screen to see all the players that are on the trading block from every team, and be able to see each player card from that screen. Also being able to get to a players card from the trading screen would be useful as well. Otherwise you have to go through all 30 teams to see who is available.

If I recall correctly from past version, the ability to display the player card is not possible on this screen due to technical limitations. However, at the top of the screen a dropdown was added to allow you to switch between various player information, although certainly not the same as the card. As for some kind of list/report for all trade block players, seems like that could be a good idea.

That suggestion would be good. Seeing what other teams might put on the trade block would make the league interesting.

So, you ARE able to see all the players on the trade block. Go to player search, and you can sort by players that have been put on the trading block.