If this is specifically for spamming chat trying to get a trial group then we'd need a corresponding way to block those messages (without having to manually block each player) if you're not currently looking for a trial. Otherwise it sounds like it would swamp chat with irrelevant messages.
IMO a better solution would be a trial finder, ideally one that lets players actually choose a group from a list of those currently looking rather than just dumping you into the first group with a gap.
If this is specifically for spamming chat trying to get a trial group then we'd need a corresponding way to block those messages (without having to manually block each player) if you're not currently looking for a trial. Otherwise it sounds like it would swamp chat with irrelevant messages.
IMO a better solution would be a trial finder, ideally one that lets players actually choose a group from a list of those currently looking rather than just dumping you into the first group with a gap.
You sure anyone would be able to see any of your looking for group messages when the chat gets filled with guild recruitment messages and willing to buy/sell messages.
"....
To avoid abuse in this function, i tought in something like: This function can only be used for Raid leader and only when group have 8 or more players...."