Since these have been requested by a few people, I've created a thread on some mod's I've made at:
http://www.osticket.com/forums/showthread.php?p=3720#post3720(http://www.osticket.com/forums/showthread.php?p=3720#post3720)
It links back to my web site http://davebour.com/osticket/index.php(http://davebour.com/osticket/index.php) noting changes I've made to suit my needs. I hope they help you meet some of your needs or show how to implement a few of the features that you need too.
Hope it helps you too.