Perhaps we should start by looking at that list and deciding which
of them will be supported in el8.
Are all of ppc64le/ppc64 and power9 all going to be valid
architectures in el8?
Is it now time to retire i386 - 32 bit Intel? The last mainstream
Intel processors that were 32 bit only were manufactured in 2005.
Yes, there are some outliers like laptop chips and a few ancient
atoms that were 32 bit only for a few more years but the majority of
32 bit only processors are now 14 years old and will be 24 by the
time CentOS 8 goes EOL. I would suggest that this is put out to
grass and left to die. CentOS 7 i386 will be still be around until
2024 when those 32 bit processors will be close to 20 years old.