'Low Power VLSI' :Help me to choose best domain for M.tech project

I'm Studying M.tech VLSI , as a part of my course I selected 'Low Power VLSI' as my project domain.
My idea is to work on 'Low Power Multiplier' to minimize it's power , delay and increase the speed of multiplier.
I don't know whether the multiplier domain is saturated or not . Is there any good area other than multiplier in Low Power VLSI ?

Still waiting for your suggestion, thanks.

Maybe nobody here has any knowledge or experience in the design of VLSI parts.

JimB