Recently the Diplomatic functions within CoW have been cut-back to a bare minimum. One cannot trade really outside a coalition, one can longer support a neighbor with troops or resources etc.
The reason (better: the excuse) given for these changes are that these limit abuse. The abuse mentioned with this argument entails e.g. the creation of super-stacks.

Do you feel that these changes enhance your gaming experience and that the changes work well for the game, or do you feel that you have been robbed of essential diplomatic features which gave an extra dimension to CoW?