I'm in the same position but I'm not sure what to do; I love OS X, and while I think Intel based NUCs will probably run it as a hackintosh, it's not really something that I want to do, so I guess I'm moving forward with switching all my storage to RAID with my current computer (albeit wasting a ton of space doing so) and swapping it for a nice small Mac Mini later.
I can understand why they haven't bothered with an update, the lack of price cuts is very annoying. Fixed pricing is fine on models that are updated every year, but anything that takes longer should really go down in price, and when the new model is ready it gets introduced at the original price while the cheaper one sticks around until old stock is cleared.
In the case of the Mac Mini, keeping a previous generation model around permanently, or re-releasing it with minor updates, wouldn't necessarily be a bad thing anyway as it would mean even more affordable entry to Macs.