I have a suggestion, as many people said, TE is about war
Now you sometimes declare a nation which is inactive, if you are lucky you can attack it for 2 days, the remaining days is only filling up warslots, which can be frustrating, so my suggestion is, if you offer peace, and the nation doesn't response within 2 days, peace is automatically declared, i think it can be done pretty easy by just running a daily database script.