Who are Scientifics?

To my knowledge, there will be an alignment of our solar system in the center of the Milkyway Galaxy in 2012. Although, I don't know what affect that will have on anything.
Also, the Inca calander comes to an end in the year 2012. Noone knows exactly why this caladar ends in 2012 (There aren't any Inca's around to ask) but many believe time as we know it will end. There were also many who believed all hell would break loose on Y2K and it turned out to be pretty much an ordinary day...
A couple guys mentioned running the MM with a UBEC to cool things down. I would suggest using a UBEC or CCBEC AND adding an additional cell to run 4S. Of coarse you'll need to gear down accordingly and disable the MM's onboard BEC. The extra voltage should reduce the current enough for you to notice a difference in temps. If not, you can easily add a 5v fan to shave off the remaining excess heat.
There are several guys here that run the MM with NEU motors on 4S & UBEC and have not reported heat issues. I think just changing the ESC is going to be an expensive solution if you plan on continuing to run 3S. I would invest in an extra cell before dropping $300 on a new ESC.