I had just flashed 23152 Shell WWE.
Did not test yet fully, but - after start 108.65MB free RAM, 111.68mb after hard reset!!!
...and it is with "heavy" Shell... Unbelievable!
And, pay attention, not because "tricks" with tweaks, but by mutching the system to hardware. This guy is high level programmer, doing what Toshiba had to do before releasing the device - this is, probably, first professional ROMs I am meeting here...