Man, that's a lot of work and won't work half as well as lockinfo or intelliscreen. For example what about your missed calls, voicemails, and text messages?Sure, you can see that you have them, but you have no idea what they say or from whom.

Jailbreaking is super easy and the upsides far outweigh any issues in my experience.

The things you gain from jailbreaking that I cannot live without:

lockinfo - your lockscreen is actually useful for the first time

biteSMS - a full featured SMS client including reading and replying within apps.

SBSettings - a drop down menu for everything you are constantly going to settings for.

Proper backgrounding and an improved task manager

Autosilent - finally being able to turn off sounds automagically by time of day or appointments in your calendar. Apple needs to support this, three OS versions ago.

full screen safari - don't waste your pixels

better folders, 5 icon dock, etc,etc etc...

Sheldon