Part of me wants to say, "No, keep the demo available until you're ready to release a new version". Plus, there's only one review to base anything off of. At least that I'm aware of. Then again, RMN has a number of games (I forget what this number is off-hand) that don't have reviews at all, so, there is that as well.
On the other hand, I can kinda see where you're coming from.