Currently when filtering on Lookup fields on a View in the Unified Interface, the User needs to add each lookup value individually to the filter. It would be much more beneficial if there were tick boxes (like is available for option sets) so the user could add multiple values at once. Also on the Option set filtering is it possible to bring back the "Select All" button so the user can choose to add all options to the filter - this allows them to then remove 1 or 2 values and is much quicker than having to add all the values one by one.