I see that not only does Ovi allow redownloading of a purchased app (Which really should have been available from the beginning), it is now no longer associated with the original device that the application was purchased for.
So now, any user willing to give out his Ovi account login can let anyone of his friends also download the application, which is something we certainly don't think is kosher.
With that said, I believe it should be up to the developer's own discretion as to what the "replacement" policy should be. If a developer wants to opt out of this far-too-lenient re-download policy, I think we should be able to, and indicate the policy on each application's product page. I for one will only release feature-reduced, or outdated versions of our applications via Ovi due to this new policy and the complete lack of a proper DRM solution.