Hey Mateo! Thanks for your feedback, and I'll go through explanations of each one for you:
1. It would be illegal to have the option to record a call without explicit consent (such as when you call a call centre), so this is not a feature that we will be exploring
3. With regards to this, this is mostly a network/technological block. Apps that implement "read" receipts can do so because they can only support conversations on the same network. For example, if you're using iMessage with another iPhone user, that ability is available. However, as soon as you use your iPhone messenger to message another Android user, that option disappears.
Same block would be with TextNow- if you're messaging with a non TextNow user, there is absolutely no conversation had on the back-end network level to be able to tell when a user has read your message, and vice versa. This is due to many reasons, again, one of them being privacy related. So while it is a convenient feature, it's not easily implemented.