Not sure if you're trolling here Doki, but I'll bite.
As people have stated above, there is no warning given and no other game I know of handles promotions like this.
Leaving things as they are means that FC Leaders either take a risk so they can delegate or have to pretty much handle the entire running of their FC by themselves; that is an awful lot of work with an active FC.
As to 'valuable life lessons', those are delivered free of charge to most of us outside the game. I don't think we need enable scamming inside just so FC Leaders can get a second dose. You also ignore the plight of FC members who lose gil, items and maybe even their house through absolutely no fault of their own.