A: It would add to the thickness of the case, instead of its height. I would like to keep it as slim as possible, so it looks like a VCR if put in the horizonal position in a HTPC environment. Right now the design is actually almost the same size as an Xbox One, apart from being a little bit thicker.A: That's because they are a Frankenstein of a cableI soldered two normal length flex SLI cables together. Hot glued the outside to protect the pins from shorting out or scratching the GPU's at this stage.I am in talks with a cable manufacturer to make a custom length shielded SLI cable.A: The risers I'm using have clips at the end of the PCIe slot to hold them in place. So far I've had this case for over a month, moved it everwhere and it hasn't been a problem.A: Could be done. However I already have a 950 Pro NVME in the slotits just not visible. If someone wanted to mount an ITX board in thise case and pass through the NVME cable to one of the GPU mounting slots, that would look coolA: That is correct.A: That is correct.A: I'm not sure if its the exact same one. Its the same format. THe PSU I'm using here is an FSP 700 Watt Platinum PSU.A: I used the USB cables from the ANKER USB 3.0 2.5" Front USB Hub, however that will more than likely change and a custom PCB with USB ports will be created to make the design a little cleaner and more compact.A: Yes, so the PSU is on top for 2 reasons: Minimize the riser cable exposure to EMI and also the GPU's (at least the nVidia's have their power connectors from the top of the card. Since the cards are mounted upside down, the power connector is facing the bottom of the case. The clearance at the bottom of the case is there for the power connector to be easily plugged into the cards. And there's barely enough clearance for it to fit there comfortably while having the cable sleeved.As a bonus at the bottom of the case (not shown in the pictures) there's room to mount another 2.5" drive, where the riser cables pass through from one side of the case to the other.A: These are custom length riser cables made by Adexelec. The cables work very well, once in SLI mode I have both cards appearing as PCIe 3.0 8x. In my benchmarks I have fond they have very little to no impact on the performance.A: I'm working through some legal mumbo-jumbo right now to get this case either manufactured by a major case manufacturer directly or via Kickstarter.A: Yes, there is a 2,5" hdd bracket that fits there. The clearance is required for power connectors for the GPU.A: Yes, I believe they are.A: Yes, that is one of the design changes I'm planning for the second prototype. Nvidia threw me a bit of a curve-ball on this one. When the new 1080's came out and I saw the new bridges, all of a sudden I had a lot more work and issues to address.To pass 2 flex SLI cables, requires one of the SLI cables to be custom design, as the PCIe risers interefere with one of the SLI cables. However If you're intending on using this with only 1 SLI cable (for example with 980 Ti's) that can already be done.Guys, thank you for the feedback so far. I'm overwhelmed with the support and really appreciate the design questions. Please keep the feedback coming and your recommendations. I would like to include those in version 2 of the prototype.