You're obsessed with the extra cores... what do you say to Anand (and everyone else's benchmarks) that the 4970k has 50-100% more single-threaded performance?
I'm not the idiot you're having fun telling people I am.
You were presented with a cheap option to get a ton of performance while you wait for Skylake. If that's not your thing ( and it isn't my thing personally, but the idea is pretty cool), then don't do it. You already know what the 4790k is going to give you, people are simply offering you alternatives. This is an enthusiast forum, not tomshardware, you've been given more than enough information, now you can make your own choice as to what you'd like to do (which clearly seems to be the 4790k).
Personally, we already know most games aren't that CPU dependent(unless you've got a very decent GPU setup), a good OC will leave you ok, I'd take the Xeon upgrade to 4.4Ghz, and if it doesn't work out, it's $50 lost (assuming you can sell your current CPU). If I can't sell it, I go 4790k.