Hire a general

[Jeheil]

Perhaps a money spinner (as I cant imagine you doing this for free), would be to allow you to hire a general.

The general would allow you to nominate upto say 10 cities to participate in a campaign.
You would select your target. The time (VT) of the strike and order in which each city will hit and which troops they would send (so an attack planner).

The general would then automate the send of each city to hit in a coordinated fashion (rather than have me have to log on 6 times to make 1 attack work on a distant target with different travelling troop types).

Perhaps each general could manage x number of campaigns, depending on his ranking, or you could hire more generals.