I think that it would be interesting to consider allowing troops to change home villages in some way or another.
In some ways it would be a good thing to allow faster amassing of troops given the now shorter game-play.
It makes me think of the game of RISK a bit, where you mass up a large army and then go conquer the entire game board, only to have another large army mass up, come in, and conquer behind.
Maybe you could have it set up so that if you conquered a new village, the entire army escorting the conquering chiefs would take on the conquered village as the home village.
Has this subject been raised before?