Oh yeah okay like that. It's pretty good that they try to prevent people from hurting them selves.
But why can't they just have an automated system that detect when an key is written in the memo, and the system would give a pop up message like: 'be careful, you're master key is written in the memo field" or something.
Or is this already what they are doing?
That's pretty much like this currently, but of course pop up message is application based while we need to take care about whole platform (i.e. variety of applications) so it's on nodes. It might be good for temporary solution, however, if someone sent that already then notifying is already too late.