The sad thing is, although there are hexa and now octa-cores availble a large part of the SCB’s will still stay at quadcores because that “fullfills” the need of many people already + staying at low cost (just look at Raspberry pi 4 still at 4 cores). Even raspberry pi 5 i’m afraid will not deliver octa-cores let alone 16 GB of RAM.
It would be awesome if Khadas would open a pledge something for people like us. Even if for example would only make lets say 100 VIM4’s with 16 GB. I mean i’m sure there are 100 people that would love to have ONE low power server to RULE THEM ALL 
If not people, for sure companies like yours that would even buy multiple not just 1.
Well i think this is already possible. With my Raspberry Pi 4 i have Ubuntu server 20.04 running on the M.2 SATA SSD. Big relief from the nightmare of corrupt and slow micr-sdcards.
Khadas VIM3 booting from SSD: Boot Ubuntu from M.2 SSD - #2 by Electr1