There are 7 pages devoted to the integrated graphics that no one cares about, but only a few paragraphs talk about overclocking the 4770k? Something smells fishy here.
Did you only try overclocking with the single tower cooler from Noctua? Why didn't you try with an NH-D14? It does fit the 1150 socket and is more representative of what will be run for overclocking. I don't know how you can be so down on the overclocking. I doubt you tried any delidding with loaned out chips. All these things might need is some better thermal paste like Ivy Bridge.
Haswell will be a great upgrade over a 775. The $330 I7 4770K and $230 I5 4670K will be the fastest single threaded processor available, and at around half the cost of the $590 I7 3930K Sandy Bridge-E. As hyper threading really doesn't help with games, the $230 I5 4670K will be the top processor for gaming for at least a year. After that, Broadwell is reportedly using the same 1150 socket.
Now is a great time to upgrade, except for the people who upgraded last year. Sorry your last years news. It seems to be bothering you a lot, as every not worth upgrading comment seems to be coming from one of you. I get the distinct impression you were never planning on upgrading this cycle.