Why? And I'm serious about that. Better clan management maybe, but other than to build a super clan, I honestly can't see the purpose in adding in additional slots into a clan. And before the flames come, I've got some pretty good ideas why this is being proposed.
So I'm back to the same question: Why?
Alts? Rune Power? Don't want to kick clannies that are on pilgrimage? Expansion for the sake of expansion?
If you're tired of turning away good friends from your clan, I can understand that, but there are secondary clans you know. And well let's be honest here, just a "little" expansion sure would make it really easy for the top 5 clans or so to make those RP and Territory numbers every month without issue.
I'm in two clans, pay taxes in two clans, and use the runes of only one, but am socially active in both, and have no problems paying tax into the second clan for that privilege. Now if you're finding that you're turning away a "lot" of good friends, enough that you find your current two clans are not enough to fit them all, it might be time to consider all of you getting together to form a clan. Just a thought.
Sorry if that sounds harsh....It's not meant to be. But I can quickly see where an expansion of clans will take things, especially given the current number of dead, idle, and effectively inactive clans that are taking up space in the lists currently.
Perhaps Glitch could trim some of the clans that have no RP donations in the last 3-6 months and retire them from the game. And give some options to the masters/officers to make clan management a bit easier so that they can see who's actually active and when they last logged, so that space can be made in a timely matter.
My two cents.
Apologies to all in advance and Nomex Dragon Survival Suit is on

SiSiX