Hole tables is an area which needs some serious attention from SW developers.
Why is it such a pain in the arse to create a table from multiple views?
Why can't you add views to an existing table?
Why does SW recognise non-circular holes but not combine them in the table?
Why is it not possible to manually combine similar holes?
Why does a through hole in a sheet metal part appear as 4 off in a table but show a depth the length of the part?
/rant - and relax :-)