You need to remember that this is a new offense for everyone of the players. Its not like some of them have been in this system for a few years and that its just a few people that are new to it. There are no veterans here that can help with the new people and make that transition easier. As far as audibles are concerned, if Joe can't make the reads for the original play then I don't know how you should expect him to call another play and make the reads for that. Plus, everyone on the offense needs to understand the audible and if one of those 10 other players don't understand the call then you shouldn't call the audible.