In my opinion, Busch is in a very difficult position. On the one hand, people who visit during October on vacation (are there really that many?) will feel ripped off if they have to leave at 5 pm to keep their kids from being scared to death, but on the other, if they do make it a separately ticketed event there will be a on-rush of alienated pass members mad at BGW because they are having to pay for HoS when they used to get it for free. I imagine that at BGT this isn't as big of an issue because Disney's family friendly Halloween event is a few cities over and their park is open all year long.
Also, one must remember that BGT's HoS is getting scarier by they year because of one thing: Competition from HHN. We don't have that here. When it comes down to it, I don't think BGW can continue standing in the middle of the road. Either they need to choose to be like their sister park or they need to really be family friendly.