I have a complaint

I have to say that i dont like the new update where swordsmen dont get protection from city walls. My reason is that AI can spam units at me and wont attack me as long as im producing shields, but as soon as make a swordsman they will take my city. This is exeptionally frustrating in early game when im outnumbered. I used to be able tofight out of it, but not anymore. It forces me into spamimg useles shields and wait and pray that oponent will stop attacking.