I'd like this feature too but I know most people don't agree with me.
I know how to bold or italicise text. I see these as workarounds for a missing feature. If I quote someone I also want to attribute and get their name right. Occasionally I want to link back to the full post I'm quoting from. It's all doable but it takes a lot longer than just highlighting a bit of text and clicking a 'quote' button.
I also slightly resent that the feature is obviously there, MNHQ use it, and trust the people who come on to do webchats to use it, but we're not allowed. Why?
What are people worried will happen if we had embedded quotes? I can think of two things off the top of my head:
1) Giant messes of nested quotes.
I'm sure it would be very easy to make them non-nestable.
2) People quoting massively long posts and then just commenting 'I agree' at the bottom.
Peer pressure can deal with this. There's nothing technical to stop people using text speak or hunning but it doesn't happen too often because people just tell them they are posting like pillocks and they either stop or leave for somewhere that likes that sort of thing.
Nobody wanted images once upon a time but everybody seems to enjoy posting them now and the sky hasn't fallen.
I don't like those emojis though. I don't think they're 'in the spirit of MN'.