Additional criteria for new members to join a clan

There is already the "minimum trophies" threshold to control who can join a clan, but often times that's not really enough ... It would be great if there were additional options that could be specified on the clan page to restrict who can join a clan that is set to "anybody can join".

Here are a couple of suggestions:

• Minimum "war hero" stars (as many clans specifically seek war veterans with experience)
• some metric that measures a player's activity (to increase the likelihood of active players joining)
• Minimum TH level
• some metric that measures the number of clans that a player has been recently (to reduce likelihood of hoppers joining)

Often times, leaders check out the above items anyway (if possible) when a new player joins, so preventing unqualified players from joining a clan in the first place would make clan management all the simpler.