#5 Isolating fans.
Sure, Dale Jr coming to the broadcast booth will be great for Jr fans that want to see their favorite driver in and around the sport again, but its not going to be that much fun for people who aren’t really a fan. In fact, with all the promotion that NBC and NASCAR are putting into Earnhardt as an announcer, it really does seem possible that they will isolate other fans in the process.
Whether that turns out to be true or not remains to be seen and will be highly dependent on how much promotion NBC actually puts into this, but if the first few promos are any indicator, then a lot of the focus seems to be on Jr and not the actual racing. Not only is that not good for a sport struggling in rating, but it also takes away focus from whats happening on the track as well.