something i've never tried in game, but would be possible in a "money is no object" army making thread, is using a few of the large arrow projectors to force a horse archer army to either attack you or slowly get picked off.

perhaps something like this:

3x arrow projector
10x dodisaskeli (sp?) the awesome lusotannan spearmen from 1.0
4x indian longbowmen
3x armoured elephants


I can't remember what army you listed. If it wasn't a horse archer army though, please remind us what it was.