I have just found the 3rd thing where I think the transkript could be better, and thought I just tell you about it.
First thing I noticed was that mentiones inside of embeds do not get saved for the transcript, so you only have the id and not the name in the mention.
Second thing was after a ticket I had here and I noticed that there is no size limit for embeds, so in the transcript, you get a very wide embed. For messages that's not the case, so maybe limit the embed size there. (while making a screenshot, I noticed text is limited in size, but not "code")
And now, I just opened a transcript with a timestamp. Timestamps get currently shown as you write them, so with the unix time. Would be the one where I say it's less important, but could be changed to show the time in a readable way