Quite possibly; I only intended to comment on booting/firmware issues. It depends on your goal, too; I'd be quite happy to see RISC-V servers (headless) and desktops (separate video card). Basically, give me a 100% libre SoC/CPU+motherboard and I'm personally happy to worry about the rest later. Also depending on your specific goals and ideology, there's no reason you couldn't make a RISC-PI that just licensed a proprietary video core; that'd still make you more open-source than today's Pi, which has a proprietary CPU and GPU.