I've made a deliberate choice against a quoting feature because it inevitably adds toxicity to people's behaviours. You are tempted to quote when you should be replying, and so you speak at your audience instead of with the person you are talking to. It becomes performative. Even when doing it for "good" like ridiculing awful comments, you are giving awful comments more eyeballs that way. No quote toots. Thank's
@Gargron Funny thing, I already can do the same in Mastodon: toot my message with a link to the original toot. I don't need to notify the author of the quoted toot, anyway.
It may be not as visually clean, but it works.