So, I've seen people requesting different color blink notifications based upon what the notification is for, which obviously can't be done without disassembling the Pre and swapping the LEDs for multi-colored ones.

What I haven't seen requested, however, is to change HOW the LED blinks.

My idea is that for different notifications, the light would blink differently.
(i.e. for a missed call it would stay solid, for a message it would blink rapidly, for an email it would blink more slowly). We could also have patterns almost like morris code with combinations of fast and slow blinks.

For an initial patch the dev could just set certain blinks for different notifications but ultimately it would be cool if it were somehow incorporated into the screen and lock app where you have a list of notifications and you choose between blink options for each one.