Make decoupler fairing size to grandparent part

[jacksawild]

When you attach an XS engine to an S fuel tank and then add and S decoupler under it, the fairing becomes a cone. It would make more sense to size the fairing to the S fuel tank so the shape of the rocket is consistent and decouplers become regular interstages. At the moment, you have to add an extra payload fairing underneath the decoupler to acheive the same effect. I can think of no advantge to having the decoupler size to the engine you are attaching it to and not the surrounding fuel tank sizes. Maybe even an option in the parts menu to choose a fairing size.

Thank you for coming to my TED talk.

[The Aziz]

Use the engine plate instead. That's what they're for.