Yes.. in the end, it's on case by case basis. If you're already doing an upgrade, or a new aircraft, I don't see a reason not to include it. If you can't sqeese it in, and it seems you are loosing on other fields because of it, I guess that just makes you a bad designer :) And I don't consider it to be a cobra* either.
*from Latin
cobra, cobris : magic
;)