Agreed, absolutely beasted my Mac with gaming since day 1, it's now about 15 months old and the dGPU is rock solid. I also have a good friend with an identical Mac who also games a fair bit on it and she hasn't had a problem either. I'm not worried, I get a free 3 year warranty and even if I didn't it would be covered under the UK's sales of goods act. But I'm itching to upgrade, give me a Skylake i7 and GTX 950M and Apple can happily take my money, will be a day one upgrade for me. Throw in Windows 10 and DirectX 12 and I will be one happy gamer.
I like this
But as much as we can state how poor integrated graphics chips are compared to discrete models, and that will ALWAYS be the case, I'm afraid it may be a dream looking at the direction Apple is going. We'll be lucky if the Skylake 15" MB Pro has a dual core i7 at this rate with Intel Iris Pro, but it will be as thin as a human hair and weigh as much as a feather, to keep the hipsters and Ive happy.