I can understand if you use the formula V2 wheel. You do want to use those leds and buttons.
Did you notice you had to increase/change the FFB when you switched from Fanalogic to Fanatec mode?
Yes, I meant to say that, I did need to adjust it to a higher level in game. Hard to be definitive but I have come to the conclusion/gut feel that the ffb is better in fanatec mode where games support those wheels.