Honestly if the process of a clan becoming official wasn't so lenient the past couple of years this would not be a problem today, it sounds like you are targeting clans because there is to many. (which there is)
There's to many clans as it is and it's as easy as 1,2,3 to become official.
If there was more meaningful vote/process like back in the day I bet the results of what you/we want/looking for would be a lot greater then they are now.
Clans use to be an achievement, a goal, it use to mean something to be invited to a clan but now its just another way to tantalize the system/staff, as a joke, cause issues, not take seriously, and cause little minor issues which I would not imagine anyone would want to deal with.
I have seen it work for myself but regarding the fluctuation from 3.0+ it now requires outside amendments such as what people have already suggested,- (Clan Events & Clan involvement).
There are other methods available to you all and I would hope you would notice it..

Work with the community, don't work against them.