Samsung, I would appreciate and answer to this as well. I wanted to use the Sp02 sensor to help monitor my fathers sleep apnea. Would really appreciate if the Sp02 sensor was opened up to third party apps, and I'm sure many others would too.
At this moment I don't think there is any single wearable device that can 'do everything' so there is a gap in the market here and it would make business sense as well. Literally just getting your software team to flip a switch to do this!