Connected part-copies

I work with big assemblys where some parts appear multiple times. If i cange on of them the other stay the same but i want them to be similar so i have to change them by my self ( and maybe forget one of them). Im looking for an upcoming feature where you can decide (when you multiply the Part) if they are connected and change there shape or not.

I hope for an less error prone designing process where no “unchanged Part” appears if you dont want to. This feature will also speed up the innovation process significantly.