Using the fun fan-made Matoran Maker program (and gimp for Tahu’s eyes) I made the masters the way they would be if LEGO was very inspired by MNOG.
Tahu- Master of Fire
http://i.imgur.com/ZlfLJmY.png
Kopaka- Master of Ice
http://i.imgur.com/AdnGIL2.png
Onua- Master of Earth
http://i.imgur.com/vGL6cf1.png
Lewa- Master of Jungle
http://i.imgur.com/weMgPY0.png
Pohatu- Master of Stone
http://i.imgur.com/Dq7MiqW.png
Gali- Master of Water
http://i.imgur.com/ha6nq9F.png