Plz add an option for clan leader and co leader to permanently ban players

My clan has been running for over a year. Its a good clan with parents and their kids as members so we are strict on the no swearing rule.
A couple of times a month we get ex members requesting to join the clan. In their requests however they write filthy things.
Now, of course we dont accept their requests but an option to permanently ban a person from even sending requests to join would be brilliant.
Also, if someone is kicked, an option to put a ban on them ever being allowed back in would be great.

Lol that feature would be great, but banning people is very unnecessary, If they request to join, accept them and then kick them straight away so their request dissappears