[Suggestion] A Way To Affect Blueprint/part Drops

[Twixcard]

I think it would be rather cool if you could affect the drop chance of item X by shooting certain spots.

for example;
Lets say you are shooting Vor, you want Seer's blueprint, you shoot his gun and every shot has a chance to "break off" the blueprint (break off could only happen once during a mission) or shoot boss Y's head and have a chance of [whateverframe] helmet blueprint "breaking off".

This would decrease the amount of frustration caused by RNG since you have a way of affecting the drop.
(I already got everything I need right now, after a ton of farming thought)
 

Stuff to think about:
 - How big would the break off chance be per shot / Should it affect the drop if nothing breaks off
 - How much impact would it have on "economy" (which doesn't really exist yet) 
 - How much can this be abused / How much could this backfire
 - Which bosses would have this effect