As it is required to power only 10 Thin Clients for accounting and document processing as well as some internet browsing, Xeon or i9 wasn't considered. This system is a massive upgrade compared to the old system running i5 4440 with 12GB RAM.
I had also seen a video by Silenced Tech about that problem but I didn't have any problem fitting my SP120 RGB fan in the 460x. I didn't have to force it at all. There was perfect amount of space for SP120. Maybe the ML120 fans need a little more space which might have been a problem in the video I saw.
I've not had any problems with the M.2 shield. My Idle Temp is around 42°C and while running CrystalDiskMark, it increases to around 51°C which is way below its max operating temp of 70°C.
The G.Skill software is still in beta and it doesn't play well with MSI Mystic Light or any other Motherboard light software. Try uninstalling and reinstalling the mystic light software. In my case, the G.Skill software detects the RAM but 1 of the RAM changes to red color everytime I start my PC as the mystic light software takes over. Then, I've to turn off and turn on the lights from G.Skill software to reset it to the multi color pattern that I've set for it.
My i7 8700k is performing well. The idle temps are a bit higher than I would've liked @ 45-55°C but with an overclock to 5GHz on all cores and an ambient temp of around 30°C, that is expected. On full load, it averages around 80-85°C. Without overclock, the idle temp is around 35-40°C and full load temp is 60-70°C. So, overall increase of 15-20° due to overclock is reasonable. I used Arctic Silver 5 Thermal Paste instead of the pre-applied thermal paste.
I've not encountered any leaks or pump failures so far.
It's fine for most types of games. Only multiplayer FPS games which require low latency might be an issue as TVs have much higher latency than normal monitors.
Ya, in its default position, the hdd cage is very close to the PSU area and only PSUs upto 550W will fit. But fortunately, the hdd cage is movable and can be shifted to the right by about 2" which gives enough clearance for 750-850W PSUs. In this position, you can see a little bit of the cage between the PSU shroud and the front fan. For cable management, I intentionally went for only 1 hdd and installed it in the lower slot giving me a decent amount of room in the cage itself to tuck in a few cables. My PSU is about 8" long and with cables, you need about 10". I highly recommend opting for fully modular PSU as you can minimize the amount of cables connected to the PSU.
Now Trident Z RAM supports MSI Mystic Light. The problem is that you can only set the colour of whole RAM stick with mystic light but not individual light zones. So, I'm using G.skill's own light software which is in beta.
They are modflex cable extensions from cablemod.
Well, I keep switching between both modes depending on the use case. I use mirror mode when I'm on bed which is exactly in front of the screen and i control my PC with my wireless keyboard and mouse.
Its called Rainmeter which is very popular and has thousands of skins. This skin is called win10 widgets.