The progression of zeta mats and why additional farms are needed.

The way I read it, zetas were purchasable for some time. Some people complained how some 60-70 mill guilds had zetas on almost everything. I definitely think that there need to be more zeta sources. It takes a dozen of these to just zeta one ability. The gap is definitely wide and you would still need to make choices if we had 2-3 extra zetas a week.