> The PineTime is a huge downgrade from pretty much everything on the market.
Not really, no. Very popular Mi Band 1 up to Mi Band 5 are very much on-par in terms of hardware. The software just has to catch up and that's probably coming.
If the project is successful, a PineTime 2 with some minor HW upgrades would be doable. Then it would take much less time because now there's a community and software out there that can be reused.