Forgotten Tales

Sometimes some ppl (like me once) sell towers fully accidently.
I saw how bad it is and i dont want it happen again. You say there is a warning button for yes and no but still it can be a problem.
This is my idea:
If a lord or duke click sell a building. Then a warning will be with YES or NO.
If he click YES (and he is lord or duke) there will be another warning that will say:

Building will be sold in 3 minutes. If you change your mind you can cancel it within these 3 minutes.

And if he click again the sell button. A warning will appear:

Are you sure you want cancel the selling of this building?
Yes- cancel it. No- continue countdown for sell.

This will also help for those who Blocking walls for a bit and when someone go kill it he sell it fast.
If we think of real life.it takes a bit time to destroy a building like castle or tower :p .
I think 3 minutes are ok.
And will also help to get out of items in building storage. And much more.

And also when the building is going to be sold. noone will be able to UPGRADE the building or CRAFT in it.

(And if a lord click sell. And then a duke go sell it then the cancel warning will be same for all)

Hope you understand me and you do this idea creator

Yes, it is a big problem, your ideas are great and I'd welcome them with open arms.
Also, could make it so that only the duke can sell buildings of 100 levels or more.