I'm not sure what the name of this feature is but I call it 'coupled drop targets'.
Like in Gtb Pinball Pool which has two sets of drop targets. If you hit one in one
bank, its opposite on the other bank drops too. Must be an expensive feature
as there is a seperate solenoid for each drop target.
Other features I like are electromagnets under the PF like Wms Torchy,
vari-targets as in Pro Football and roto targets as in Gtb Circus. And my
all time fave, zipper-flippers!