If i dont remember wrong i think this has been requested once some time ago but probably forgotten.
I would like to be able to add commands to the queue and also possibility to save it in the queuefile.
Times this can be useful... is after you have downloaded some dirs from an ftp you can add "site wipe dirname" and it wipes it after your download has finished.
There are also loads of more times this can be useful but i belive that one is the most significant.