We have already PITS item about this. I have also increased the priority of this feature.
Note that, when planning for releases, we are always going through the feature requests in PITS and taking decision based on votes.
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items