Description:

Pretty self explanatory, to be honest... this feature allows any all sonics to work pretty much the same way Dynamic Lighting does in Optifine

Lore/ Brief Background:

On multiple stories, we see The Doctor use the Sonic for light. He does is to attract a flying shark in A Christmas Carol,

Im pretty sure he uses it on several occasions to light up dark areas like a cave, the TARDIS (crashed/ without power), etc.

Im not curtain, but I think Sarah Jane uses her sonic Lipstick as a torch every now and then in the Sarah-Jane Adventures

Plus, it just seems like such a basic feature of a device with a light on the top...

How Does This Affect Gameplay:

"Imagine the scene, you're mining in a huge cave when all of a sudden, you run out of torches. You hear a faint hiss in the distance, followed by a grown, bones rattling and a "you will become like us"... you go investigate (yes, without any torches, 'cause that's just how you roll). the noises get louder and more frantic, you wipe out your sonic, Shift- Right click to extend it and active the light, its bright light illuminates the entire crypt. You're surrounded by creepers, zombies, skeletons and all manner of Dalek Mod mobs!"

In this situation, you'll probably be dead before you even get chance to equip your sonic, but come on... that was a good story

Essentially, it would most likely be small feature to allow some light in dark places. Good for building at night, mining, exploring, etc.

Any Other Information:

 It wont be a feature that needs to be crafted, it basically just gives another use for Shift-right clicking a sonic other than to just extend it