Can I have another one?
Streamlining enhancements!
At the moment, enhancement drops are inferior to the ones that can be crafted. There's a big rift between the two that I'd try and meet. Obsolesence bothers me.
All TOs, DOs and SOs would no longer expire, behaving exactly like crafted IOs. If you get one from a drop, it could be useful to you until 50.
To keep things simple, you can craft SOs (but not DOs or TOs - they'd be interface clutter). Generic IOs will be gone, but just for the sake of having fewer types of enhancements. This means you'll be able to access SOs from a lower level. The SOs available to craft correspond with your origin.
I'd do away with generic/SO recipes, since enemies are dropping the actual enhancements anyway, and just double the cost of crafting them at the workbench. Cut out the middleman. Once you have the corresponding badge, the price is halved.
The upshot is, crafted enhancements and drops are exactly the same thing.
Set IOs will still drop as recipes, but I'd do one of two things:
Either
Separate attuned IOs from the levelled IOs pool in the AH. You can basically circumvent using catalysts as it stands, which I find kinda weird from a game design point of view. It makes a small bunch of things redundant and that cannot be tolerated in my empire!
Or
Crafted set IOs are only attuned, levelled ones are gone. Keeps it simple.