It would be great if we could selected tags in the draft window. Distraction at times cannot be avoided and not everything can be summed up in one tag. When coming back to a draft there is no way to see which tags I have already added when I started the draft.
Checking one-by-one potential matches can take a while, so I just send the email, watching send since i love 10 sec delay, then look at tags and then snooze/archive. Could save at least 15 sec on new drafts.