jump to drill level
option to drill directly up or down to a level of your choice.
for example, if a axis has 7 fields that can be drilled down through and you want to drill directly to the 4th level, the ability to jump straight to that level without having to click 4 times would be helpful. Also, if you were down on level 7 but wanted to go back to level 2, you wouldn't need to click up 5 times.
It would be very useful especially if you want to have time hierarchy over or under other axis such as state and city.