I would not be interested again using bitcoin if its price stable. the fundamental thing that kept me interested in the bitcoin is an investment, when I bought the greatest hope is thus bitcoin benefit (not for the transaction). so if the price is stable then I will switch to other investments and use real money for transactions.
I think stable price of bitcoin will attract more user because main reason why most business doesn't accept bitcoin is instability in price.If price would stable then more business will accept bitcoin as payment method and a user will feel safe using bitcoin without worrying about losing money because of price drop.