Attacks of home base have meaning
If a home base is attacked and the armies inside are defeated, the city(s) the user has occupied become unoccupied. If there are no armies in the home base, then defeat is immediate.
Armies in the cites that become unoccupied are not lost. Maybe they could be expelled to the outskirts of those cites, or automaticaly sent back to the user's home base (taking the travel path and time).
The home base isn't lost.
Reasonís behind above suggestion
- While this would force users to keep resources tied up at their home base, it would also force users who take over large, special cities or lots of small cities to divvy up resources, giving other users a chance when attacking them.
- It would also introduce a new strategy element, as you would be launching and coordinating multiple attacks at once.
- It would also make the home base location more meaningful. Throw your home base in the middle of Europe, and it is easy to attack lots of cities but your home base is also an easy and quick target... keep your home base in the middle of nowhere, plenty of time to prep for attacks but it take times to get anywhere