First issue will definitely get fixed. For the second issue, do you get any error messages? If you go with the iMacPro1,1 route, WhatEverGreen is not needed and also shikigva=1 flag.
You can just back up your current CLOVER folder and try the new SMBIOS. If anything stops working, you cna...
Any idea why this command is no longer working in 10.14.5:
Find: BA050000 00
Replace: BA000000 00
I have to use WhateverGreen to get past the black screen at Desktop on boot.
Now that RX 580 is natively supported in the latest beta build, would it cause an issue if I switched back to iMac14,2 or iMac15,1 profile? These two profiles matches the hardware that I have. I would still keep iGPU disabled.