I remembered the question I want to ask for three years already)
What will happen if I cut out this part from the case? Do you think this cooling will improve? (on video cards like a blower, it looks as if about 30% of the holes on the video card are blocked, from where air is pushed out).
For GPUs with blower style coolers it might improve the cooling a little bit, but I do not think the difference would be as big as you would expect (for most of the graphic cards). What is more, many blower style cards uses only one PCI slot to throw out hot air. Your situation is specific, because your radiator fins are in the middle of this bar, and it could help a little bit more, but still... do not expect like 30-40% better cooling just because of removing this middle bar.
And the second question - how much can this affect the stiffness of the case? In my opinion, everything looks pretty strong - in fact, the mounting points of the video card from both sides are preserved, and we only lose this middle bar, which always seemed to me superfluous, and the purpose of which I never understood. Maybe we can see such an improvement in the third version of this case, if possible? )
photo there
The stiffness of the whole case probably will not be affected that much, but the point where the middle threaded bushing is inserted might bent a little bit while screwing your graphics card.
Maybe we can see such an improvement in the third version of this case, if possible? )
I do not think it will happen. You are forgetting about people who are using 1-slot GPUs. If you use only one slot for GPU, then the 2nd one will have to be blocked by some pci-slot cover. If you will remove this middle bar, then between GPU slot and 2nd slot cover will probably stay some gap, which won't look very aesthetic.