"As long as it's really, really easy to implement?"
You want an AH? Well, I'm not gonna design an AH interface, but here's the next best thing. Sure, it makes the wards completely pointless, but you want it and, more importantly, it's really easy to implement!
SP got you down? Here's all the SP you can handle! That took me about 15 minutes to implement.
Too much stuff, not enough space? Everything stacks to 99, which is the biggest number I could fit in the box - without changing the size of the box, which would have taken me more than the 5 minutes it took to change the "stack_size_max" variable to 99.
Balance? Who cares about balance! There's no endgame content or PVP! Everyone can level every class to 50!