If you would have listened to all the things they've said before the release Skyrim should have been almost perfect

However the real problem in my opinion
is the lack of balance - and not only in the economy -i agree with you.
I hope that in the Dlcs they will add something "concrete" to do with the money,and re-introduce at least weapons/armor degradation.
I'm not even sure degradation is possible in the current game's system, even if they wanted to add it, which I'm fairly sure they don't. I'm not so sure it's even a good idea from the original game's (Morrowind, Oblivion) perspective. The linear Degradation became a little too irritating, mostly because it was so trivial, a 20g hammer could repair 50,000 worth of goods in sufficient skill, and it didn't scale in any drastic way if your skill was low.
If I were to implement degradation in Skyrim, it would function off the current smithing skill, using raw materials and the grindstone-workbench. When the items health reaches 0, the item is officially "Worn", but instead of breaking outright, it immediately drops from 100% effectiveness, to 50% effectiveness, and won't degrade beyond that point. "Reparing" Consumes one group of materials (Ebony Ingot and Leather strap for most Ebony Weapons, for example) to repair the item to 100% from its current state. Same cost for 99% to 100% as from 0 to 100%.
I think a system like that would change the dynamic and economy of the game, without severely penalizing the player who "Just doesn't give a damn", given that the armor and weapons in Skyrim can usually be brought above-and-beyond anything reasonable to kill most enemies.
I don't even bother looting stuff any more. None of the vendors can afford it...
This is a problem the Thieves' Guild solves, but I think they could have really taken it a step further in the way I described. Doing Radiants (Specifically Bounty missions) in a hold should improve the hold's merchant stock and gold reserves. Strong vendors shouldn't be limited to the Thieves guild.