Office 2007 Ultimate Key Feedback about cross vers

Greg Lindhorst (Program Manager on the team) is looking for customer feedback on the impact of some new features on cross version scenarios. Love to get some feedback from the community about a few questions we have: How important is it that previous versions of Access can RUN applications (launch forms,Office Pro 2010 Key, change data values) written in a newer version of Access? How important is it that previous versions of Access can EDIT applications (modify forms,Office 2007 Ultimate Key, change data schema) written in a newer version of Access? Your feedback is greatly appreciated. <div