1. If a sprout is kicked out, make them require a new invitation to rejoin after their kicked out cooldown expires. That way repeat offenders and RMT advertisers cannot automatically rejoin.
2. Make it so a Mentor cannot send anyone invitations into the Novice Network if they are not actually in the Novice Network. If they want to send the invite they can join the Novice Network to do so and if the Novice Network is full then someone in it should have it covered.
Also to ensure both requests actually have an impact it could be made so sprouts, returners, and mentors alike cannot voluntarily leave the Novice Network for 5 minutes after joining it. This does not include idle timeouts as mentors.
In case anyone is wondering yes these requests are mainly to stop this particular RMT advertiser that keeps getting invited into our server's Novice Network no matter what we do every day at least once a day, but are not limited to just that. However, this issue with that damn advertiser has been going on for about a month now and it needs to stop...