It seems the scenario works like this. Correct if I am wrong.
Build up the farm account.
Move into a house and out of the capital.
Go attack the house of the main account.
Move back to the capital.
Now the main account - and others in the house - can attack and nothing can interfere with them. At least out of the capital, the farm account can get robbed by others, guarded, kicked to capital, etc. There is at least some risk.
I like the revenge feature but it is really getting abused. I think the capital should always be safe. Maybe just like when moving, put a timer on moving after an attack - so there is some time for revenge. But if moved to the capital after that time, the revenge should end and should be safe.
Please give us some tools to curb the farming abuse.
PS. And please address Jacques