my iMac Pro issues

My new iMac Pro arrived roughly a month ago. After some weeks of being happy with its performance here're some issues I discovered:

1. crypro_val errors: There's a separate hread on this one: warning: crypto_val: object (oid 0x4): invalid state.key_revision (0) : My view is that Apple used a corrupted image when mastering the iMac Pros.
2. Startup keys not working: Pressing the option (alt) button at startup didn't started the startup manager. But when I've tried to reset the NVRAM by pressing option (alt) + cmd + P + R I didn't reset the NVRAM but started the startup manager and was able to select an USB stick to boot from.
3. No boot from USB stick: When trying to do so, I received an error message telling me a software update of the USB stick is needed. After installing the software the iMac Pro reboots but is showing the same message. So I'm only able to boot "normally" or from the recovery partion, but not from an USB device.
4. Sometimes the iMac Pro is loosing the connection to my trackpad even if it's connected via cable. I need to switch off and on the trackpad.
5. Sometimes my iMac Pro freezed and powered off by itself. After a lot of investigation I deleted all widgets from the dashboard. Since I did, this issue never happened again.t

It seems for quality control at Apple (as with other hard and software) there's a lot of room for improvement...