Absolutely yes. There is.

Still a lot of people who don't yet know about Bitcoin is using LR, C-Gold, Pecunix, Perfect Money etc for their semi-anonymous trading.

Making an exchange will help these people move to Bitcoin, so i would say that there will be market for it at least for the next 5 years, until everybody of them moves.

I was stupid not to make an exchange like this myself, but now its too late for that. So i wish you good luck and good profits.