Upgrade TinyMCE to latest version in TS 6.7.2 SP2?

System

is this possible? i have a request to use the latest tinyMCE (3.3.6) in our templates (like wordpress has) but the version in 6.7.2 sp2 is old and missing a lot of functionality (i.e. cropper). is it possible to download the latest version from TinyMCE site and overlay/upgrade the version in TS? i did a little digging in the forums and it appears its not possible?