@atpfm thoughts as I listen along (I've not finished, apologies if you address this later).

Firstly, I've worked internationally and currently work in an area with a large number of English as a second language speakers.

Having live translation in your ears requires a huge amount of trust in the translation being accurate. I find that with Google translate the other speaker in a conversation will occasionally see their own language transcription is inaccurate and correct it, even before the translation process (itself not always reliable).

Taking this visual cue away mean the other person will not know if they were understood correctly before they're translated. Honestly I don't trust the Siri company to get this bit right, regardless of what they then translate.

Secondly, regarding blood pressure monitoring. My watch currently offers this, but I rarely use it. Without the ability to directly apply pressure, it relies on frequent calibration with a 'real' blood pressure cuff. I've occasionally calibrated my watch when I've been to the docs/hospital but rarely check after that. If I needed to check my blood pressure regularly I would have to buy a cuff to calibrate my watch - and would probably just end up using the cuff anyway as it's more reliable.

Until Apple can find a way to measure blood pressure without relying on an external calibration, I can't see them trying to add it to the watch.