Shoutbox

For the first one, Offline Messages does a much better job, I personally can't think of a reason why you would prefer the set comback feature apart from the ability to withdraw or modify a message after you have set it (which would be great if Microsoft allowed us to do).  As for the personalized statuses, this has been asked few numerous times and I do hope that Patchou adds this ability in the next major update of Plus! (which shouldn't be too far away).

Have fun using plus! and keep those suggestions coming, I'm sure Patchou always enjoys new ideas flowing his way.