For the stringed instruments I use the same Expression Map. So, “Staccato 1” and “Staccato 2” articulations are always on position 1, respectively, position 2 (in the info line articulation drop-down menu). It would be so much easier to select notes on multiple staves and apply the position 1 articulation (staccato 1, in my case) for all the selected notes.
This being said, please give the user the possibility of assigning the same articulation for all the staves that contain the selected notes!