It still isn't standard to let people choose functions for buttons in console gaming?
This is one of the most, utterly, incomprensible choices regarding console games.
Are they afraid it will be seen as too complicated and 'modding-like'? It's not like a prompt will force you to map controller buttons, it can just be an extra option for anyone who cares to change functions.
Also, for the very few shooters I do play on consoles, I prefer the typical playstation configuration, if R2/L2 become the new standard, I really do hope they'll allow us to choose how we prefer to play.