Might be some value in discussing SSD.
https://gearnuke.com/microsoft-looking-staff-leads-next-gen-xbox-development/
I'm kinda hopeful that a custom memory arrangement might involve, say, 64 GB of SLC as pool for developer controlled game working space, dash and suspend ... and then use dirty QLC with automated external caching for game installs.
There comes a point where the correct balance between durability and capacity is separate pools. Some SSDs already have an SLC cache. On console, might as well expand that cache and treat a part of it as an additional pool because it's not like you're needing to protect a low durability SSD against a Windows pagefile.