I have high hopes for Risc-V wiping the floor with x86 and ARM in a few years in many (to-me-important) aspects. If beforehand the Pyra gets an upgrade that does away with lots of problems, what incentive would be left to switch again? I don't want my Pyra to be the only device, with which ARM keeps a foot in my door.
Of course, I still may be very wrong about the future of Risc-V.
I love RISC-V possibilities BUT it will take years to start in personal computers (desktop, smartphones...).
I know Si-Five: they have 1st 64 bit RISC-V CPU capable of running modern desktop Linux since Feb 2018 (HiFive Unleashed, a development board with a 64-bit SoC with four U54 cores). Well, we are in May 2020 and:
1. No board for normal market, normal price (this SBC cost more than 600$; It is for developers).
2. It advances but Linux support is still far from complete. More work/time is needed.
3. This board has no GPU (nor integrated video). There is a problem: we will have open CPU but no open GPU.
It may be Pyra needs a new CPU much before RISC-V be ready for Pyra CPU upgrade. It coukdw be RISC-V be ready not for 1st CPU upgrade, but for 2nd or even later upgrade.
When we see RISC-V SBC like RPi (with integrated GPU/etc), it will take years to have possibilities to have that SOC in Pyra.
PD: For newcomers: RISC-V architecture is libre, but so much libre that it can be totally close, as anyone using it can decide, and they will close its product. I.e. most RISC-V CPUs will be closed. Of course we love it for that freedom.