It would be nice to have actual Bing or other imagery displayed when you are in a blank infraworks model (prior to importing any data) so you can get a good feel for where you are in the "real world". I know now if you scroll a ways out in a blank model it will show a representation of the earth. It would be even better if it could stream actual Bing imagery as you drill in. Taking this idea to the next level it would be great to have base topo as well. So this could look very much like a google earth model which could be turned on and off as needed to work with the actual data you import.