I am meeting the roof of 100 items to reorder on our news pages.
This seems to be set in the constant 'MM_UI_MAX_REORDER_ITEMS'
Alas also using an archive to narrow down the number per page disables
What is the reason for the limitation? is it related to this core issue?
Reordering fails with more than 100 items in a menu
It seems to have a solution, but it is currently on "Needs review".