Fanfic-ish possibilities:
- G5 manifested through Awakening: making the air elastic according to Luffy's will. In short, Luffy can make Ursus Shocks as many as he wants, as strong as he wants, wherever he wants.
- G5 manifested through Awakening: making elements elastic according to Luffy's will. In short, Luffy can store, compress, and release elemental attacks he received. Like an elemental storage man if you will.
- G5 manifested through Non-Awakening: Rubberizing the Nervous Systems and coordination paths. In short Luffy can attack and react beyond the speed of light.
- G5 manifested through non-awakening: Infinite Density capabilities. In short, Luffy can increase or decrease his rubber density at will. Resulting in hardest substance in universe or most intangible body in the universe.
- etc etc
- ????
- profit.