A depth mask part

We all know that in Juno: New Origins, parts like landing gears and engines automatically create a "hole" in the fuselage theyre connected to, without the player needing to create a hole manually. This is very useful on said game for obvious reasons.

What if in SP2 there is a block that mimics that effect, making it much easy to makw holes in the fuselage of any aircraft, as well as being very useful for shaping.

A similar thing was suggested by @jamesPLANESii, but I believe anything like im suggesting would be easier to implement (mainly cuz its already done). The only problem I believe is that it may be impossible to change the hitbox of a part using it.

I thinked of this when seeing how the AIM-7 Sparrow is mounted on the F-4 Phantom II, having s little cavity on the fuselage, making it more aerodynamic, and leaving other hardpoints for mounting stuff.