Here is mine, a shame for high level player :

Sidewinderized (adjective): Being atomised and forced to eject by a sidewinder.

I'd be a Guardian gauss weapon, because i'm mysterious and don't like thargoids !

If you had to choose only one engineer to upgrade your ship until the end of the game, which one would you choose, and why ?

Hehe, i think the best way to spend the first day in Elite is to go to Hutton Orbital in Alpha Centauri, to bring back quickly a Hutton Mug and to unlock the free pre-enginereed Anaconda !