People abuse of it.
I know some people that just play on it, play ranked, ect...
PBE should be for :
End 90% of people in PBE is just here for :
-Have free content
-Test new champions for lolz
PBE should be restricted for many reason and connected to your main account. Why ?
-Players under lvl 30 has less experience, but I agree that they can have good ideas and feedback.
-Players will not rage because they know that real consequences will happen if they get banned (main account banned ? You lost your money, not free content).
-Players will be here for REAL testing. Less Queue time is more intensive test. True fact.
I know that there is already a secret server for some player (less than 50) that test thing long before us. I don't want PBE to become that but major actions need to be taken if you want it to be good.