I remember reading that the Bluetooth stack was one of the main differentiators for Pebble at the time due to its reliability, shame it's not included here.
I feel like it's the same about many of the items mentioned above, the free/libre offering in that space are a lot more polished than was the case 9-10 years ago. Back then the audio codec was still a patent encumbered minefield, now you can just use opus. The quality and diversity of free fonts is ordered of magnitudes above what it was 10 years ago.
In short, it should be much easier for Eric to fill those gaps with free/open offerings than it was 10 years ago.