What if everyone start cataing their techs ?
The one we had to deal with was deffending all of them, auto-building staff, building L1 crannies so villages can't be gone. Well, we were surrounded by 30 of them in 7x7 so they had easy job moving that deff, with us not being able to make much siege due to constant war with them. Now when bots made v3's it's going to be even harder to remove them all.
But I guess it can be done with a lot of people doing it at the same time.