Request: Campaigns show as "Completed"

I'm guessing in AOE2 there is some programmatic reason as to why it's impossible to show whether a campaign is completed or not... if that's not the case then... what the hell?

But in AOE1 if the whole campaign bit has been re-done (maybe it hasn't).. but at the very least the achievements work for campaigns which must check that all the missions in a campaign are complete before giving the achievement... so is there any reason not to put a little tick or append " (completed)" after the mission name string?

If not here.. then where would be best to make requests?