If you are comfortable making changes to the Registry, this edit will expand the menu to the full height of your monitor. If it includes more items than will fit, it will become scrollable.
Add a new String Value registry key S11_AlwaysScrollMenus which when set to 1 will stop Start11 making menus multi column and instead use a scrolling list.
Create in HKEY_CURRENT_USER\SOFTWARE\Stardock\Start8\Start8.ini\Start8