@Sobex There's one other big downside: power management really isn't very good on most of the modules *yet*. I think some of the older modules have suspend, but hibernate is kinda working on the RK3588, no suspend yet. I do think this is a big barrier to adoption for many people.
@Sobex Usually arm64/aarch64, but there are some other modules, including a (soon to be revived) FPGA module (that one's just for some very particular developers), and there were some demos of a RISC-V module. But it's generally ARM64.