Dont know why kiwi mentioned it - seems not related at all to the "wall" layout.Smart view was a better idea... just saying Please make smart view happen for MP1+2!
http://wiki.team-mediaportal.com/1_MEDIAPORTAL_1/18_Contribute/99_Design_Concepts/Smart_View
I know that this is MP2 part but as you mentioned MP1 isn't this similar to your smart view (at least to achieve the same goal )
http://wiki.team-mediaportal.com/1_MEDIAPORTAL_1/0_What's_New/1.5.x/Config_Tool_Changes/ViewModeSwitcher