As you may have heard, I remembered some rarely-used glitches/foresights when I first got into SimplePlanes. Here are two examples:

First one is the A Remote VTOL Concept in which the aircraft has its VTOL engine separate from itself, but still somehow functions until it reaches a certain distance (from Wright to Krakabloa, apparently)

Then there is the Rocket-powered detacher which activates the detacher whenever a rocket is fired. This was presumably meant to be used as an ejection mechanism, but the ability to freely fire missiles was far too promising to ignore. Here is a missile launcher that uses this very mechanism. This does come with the inherent price of a permanent smoke trail, however.