As you know binance is one of the fast growing  growing exchange out there and it has already become global exchange and if they continue with same pace then in 5 years we might see binance as majority holder in exchange space then bnb will automatically rise in price so it is safe play to accumulate it and leave it for few years to get massive profit. Binance is continuously working to introduce something new to space so we might see other usage of bnb soon.