I never liked the tier system. Being a T1 fighter from way back, when the system of normal, enhanced and powered was tier enough for hundreds of fighters for more than a decade. It was when people stepped into a T1 fight and they were beaten, not by the powers but by the writer, that a shift came to make the fights more 'balanced' and 'fair'. 

Of course this had the reverse effect and crappy fighters believed that their characters 'powers' should allow them to beat anyone, lessening the actual skill of writing a clear and clever fight. Even when a perceived lesser powered character beat a more 'powerful' character through skillful writing it often ended up in dispute because the powers somehow should be the determining factor in a fight. 

Anyway just ranting. Let's see your ideas Rilla