• Ability to add spaces at end of topic title alteration string so multi mod produces, e.g. "[Solved] <title>" as opposed to "[Solved]<title>". I know that would require some kind of workaround from trim() but it just looks a bit neater. :)
• Ability to configure alteration of topic description as well as topic title.
  

I vouch entirely for spaces in the topic title, like you said it would be a lot neater! Alteration of the topic description is also neat.