Suggestion - Global trade beach and mountain flooding

I have some options for solving the expansion items flooding issue.  I think any of them would restore the global trade usefulness. 

1- Limit the appearance of similar items when searching.

2- A simple search filter or items blacklist.

3- Separate industrial, processed and expansion items to different trade tabs.

4- Remove the trade visibility cap, and show all items being announced.

There are many ways to balance a change like this and even make EA profit a bit more, while improving the game experience. Since so many players end up resetting the whole game to keep stuck at level 12~14 grinding, and many end up giving up on the game entirely. Any improvement would be a win to everyone involved.