I worked a small group of people into a really tight knit clan and slowly thru growth and a timely merge formed into an "top 3" established clan of my server. All of the following advice is geared toward a family clan with ambition and focused interest in being proud of their clan in the long term.
I think the root and core issue than every rising clan needs to accomplish is learning group and team dynamics.
Get your DPS (rangers and rogues especially) used to picking up ADDS or additional mobs that enter the field and go after the Druids. Get your Rangers used to spamming bolas and your rogues used to dropping aggro with Distract. Get your Mage used to cloaking the tank and debuffing the boss for fire and cold DMG. Get your tank used to spamming taunt and get your Druid(s) used to working together. And utilizing Calms when warranted.
Mainly I am talking group dynamics because group dynamics and working on them, collectively as a group make everyone FEEL LIKE THEY ARE A PART OF SOMETHING. And that's what a clan is about, it's a home for growth and hopefully success and achievement. But when everyone is a noob, or when most of your clan are noobs, you need to work on group training more than clan training. As you get the group aspect down, the clan aspect will fold around it.
In terms of the clan recruitment etc, I would keep working with your core nucleus on team roles and dynamics and then slowly recruit others into the mix. Try never to have more than 3-4 "new" people, because "who you are" can get muddy when there are more new people than core people. I would strongly suggest NOT to Promote Guardians based on their lvl. Promote using trust and gauging leadership and activity. One bad guardian can wreck a promising clan, safeguard this by only promoting thru merit and clan trust. Sure it's harder to do, but the rewards are so much more real and coveted.
Keep looking for the team-oriented, and keep kicking the selfish, it's ok to demand your clan members to be good, upstanding people. You always want to run a clan that you would want to be in, and that often means kicking morons. Don't be afraid of kicking morons, they sully and degrade the quality that you and all yer crew work so hard for. Don't be afraid to demote inactive guardians. If they didn't tell you why they left for 10 days, then they aren't leaders that guardians should be. Let your guardians know that going inactive without giving some sort of notice for a vacation or a break will be grounds for demotion. You need active leaders to help ya, not dead weight figureheads.
Lastly, the hardest thing to impact on your clan is to be aware of your clan name being on them at all times, and how they act on server reflecting on all of you. I find that the best way to get the clan to internalize this, is by recruiting great people and kicking anyone at all subpar (subpar in character, because game knowledge can be taught, assclowns can't). Good people are going to be good, because they are, and it means a lot for the future of your clan to be however small, stubbornly respected.
Best of Luck,
Tea
I posted this about a month ago to a similar question, take it leave it.. Just my thoughts on the subject.
Teaweasel 121 Druid (Morrigan, Clan: Avalon,
On Hiatus)
Teaweasel 133 Druid (Arawn, Retired)
Best Build is a 30/30 in Thinking for yerself