Yes, but this is happening already. Free apps and paid apps are already listed next to each other.
I am not seeing this from the user perspective. I am completely aware of the terms on publishing on Ovi and the 50 euros fee even for free apps etc and again I do not see the problem. If you are a developer and you have two options to publish your freeware, one paid and one free you just choose the free repository and thats it.