Sounds like people are whining!
Use them and abuse them, they have actually been a pretty big constant in the game, beside of course BT get ravaged by Damions or undead or one another. Why change a good thing? I mean I enjoy killing militia sometimes more than I do stabbing a noble or council member, well almost, let's be honest if you can't break the siege you obviously are not trying the right tactic to overthrow the city or stronghold.
I mean starve them, salt the fields, kill them softly out of boredom of just sitting in the place. God I mean Titans knows that will work at some point and they will slip up or the nobles will get fed up of sitting and doing nothing. I mean seriously militia are badass with out those little ankle biters I think well wait the game would be very different and well.... It doesn't matter it's to late!