The bottom line was to completely replace the original Smarthub interface for something way more useful and efficient.
There are some features of the TV that are not yet ready, and so far the lack of hardware graphic acceleration makes many applications too slow, but I'm posting all my research hoping that more people get involved and help developing the project. Otherwise it will most likely die, since it's way easier just to buy a Linux box and use it instead of the TV's interface

Anyway, the guide itself is kinda long and that's why I'm posting it as a PDF, including images, some test running Nintendo DS / Game Boy emulators, etc..:
http://www.mediafire.com/view/mrt1xecd3 ... _Smart.pdf (you may need to zoom in to read it more comfortably and see the images better

Hopefully someone will find it useful, I'll upload this post as the research advances ^^
~Sky