The normal taskbar for each program in Windows 7/8 has two "context menus"
--> Normal Right Click: Task List context menu.
--> Shift+Right Click: Window Control (Min/Max/Restore) Options.
Unfortunately, All of that is missing from ObjectDock* which means OD can't really replace the TaskBar
On top of that, there is the poor implementation of "SystemTray" in ObjectDock, which just gives you supersized icons instead of perhaps the normal small-icons with multiple rows.
* Likewise, Start8 appears to not support JumpLists either.