They are as strong as a non upgraded two handed swordman, and they only cost 50 food, easy to spawn and everything, anyone has a history of a game that went this way?

I've always wanted to try out this strategy but I think it would require some really good vill micro.

Well, vills won't fight automatic, but if you wanna have fun with them you should try:

I remember Cysion had this on his site.
[You must login to view link] somewhere here

spanish vill cheese is used sometimes

but like all cheeses if they fail you're gg, and if they work you're a hero