So you stopped producing guild slots for some reason (not a good one either). Fine. You replaced them with Augment Crystal slots. Fine. And the Augment slot idea isn't bad, but it's not great. It needs a couple of changes.
1. On some existing named gear, you replaced inherent powers with slotted versions of the powers. THAT IS A TERRIBLE IDEA. The augment slots should always - always - be a bonus on top of the existing powers.
2. Augment crystal availability is a bit of a joke. You can either pay stupid high in epic tokens. I'm sorry, I mean Tokens of the Twelve, wait for the one you need to drop, buy it for stupidly high prices on the AH, or purchase it from the DDO store. You need to either up the drop rate of low and mid-level augments, or make them purchasable from a vendor, perhaps as a 150 Favor reward for some House (favor rewards need some revision anyway).
3. Utility of the Augments blows chunks. Sorry, but it does. For the minimum levels involved, the augments are not worth it barring a couple of effects. So IMO, there are two changes you need to make:
a. Change the bonus type to Augment. That way people don't get screwed slotting spell point crystals and the like because you haven't bothered to update the text on existing items.
b. Shift most of the effects down one tier of minimum level. ML 20 for a +6 stat crystal? I don't think so. If you shift most of the effects down one tier, you'll greatly increase the utility of this system.