Will be cool to have a procedure block to check what is the harvest level of an item. Useful to check when a player breaks a block and uses custom drops with custom procedures, I think it will execute even without the correct tool for it, so this thing will be useful. Another example, a quest where you have to give someone a diamond or higher tier pickaxe to win. In this case, modded pickaxes will also work.
Late EDIT: Another very related idea, is a procedure block that detects the type of tool of a provided item. So, this will also be good for custom drop procedure for a block, detecting the type of tool and it's harvest level.
Thank you! :D