Paul,
If you are running Bachmann factory decoder equipped locomotives look at the Quick Start Guide for the locomotive and its CV list and you will see you are not missing out on anything important.
Not a Bachmann factory installed decoder equipped locomotive, then use its user's manual and if need be, its decoder CV list to determine what is assigned to Functions greater than F8.
If you are going to install decoders yourself then you are missing out on a long list of things.
If you are running Bachmann factory decoder equipped locomotives look at the Quick Start Guide for the locomotive and its CV list and you will see you are not missing out on anything important.
Not a Bachmann factory installed decoder equipped locomotive, then use its user's manual and if need be, its decoder CV list to determine what is assigned to Functions greater than F8.
If you are going to install decoders yourself then you are missing out on a long list of things.