I took the cover off the case to let the GPU breath some open and it brought temps down to 70C (as from 87C).
And if I were to perform some modifications, I would not use a dremel; I would use a drill (I feel like a drill would give you more precision (and, of course, I would take the cover off so I don't drill into the GPU and get metal shavings everywhere)
My GPU temps only get high when playing Battlefield 4. I turned the graphics down a little because all the eye candy was affecting my personal performance (wasn't able to see clearly). And the GPU actually sucks in quite a bit of air despite the fans being "covered" (there is actually about 1/2 inch clearance).
The only beef I have with the case is the way the power LED is wired up. The Power LED doesn't hook into the motherboard (unlike most cases), it is powered via a molex connector, which meant I had to plug another cable into the PSU and ultimately took up about half the open air space that was left after all the main wiring. Building a PC in the case was actually quite straightforward and didn't have nearly as many complications as most people would make you believe (just as long as you assembly the motherboard's components ahead of time).
So aside from the molex Power LED, I love the case. It fits on my desk perfectly and doesn't take up much room at all. I would buy it again, but honestly: maybe not as my first choice (as it was this time).
I play at 1080. the 970 should be able to handle 1440 at medium to high settings just fine.
And this is my first build all together, so all the parts are brand new.
My two main uses are gaming and video streaming, which it does both perfectly fine.
What exactly do you mean by "it looks like you are missing out on a bunch of parts?"