I keep meaning to ask for this! I use the quote history feature a lot - but it gets ridiculous after 10 quotes. Apart from the extremely long scrolling required, the earlier quotes reduce in width until there's just one letter per column, which makes them unreadable anyway.
Could you limit the full quotes to five or six? You could still put the username, date and time of preceding quotes so that over-invested pedants (me) can find them as needed.
Screenshot attached.