It’s a big deal to be able to adjust the dead zones on the thumb sticks. If you think about it everyone’s controller is a little different. This will give you the opportunity to adjust the dead zones to the optimal level instead of an average set for everyone.
As for look acceleration that will be great too. Some want to be quicker to do 180’s while others might want more delay before that occurs.
These new adjustments combined with the current look sensitivity should help out quite a bit.