As much as i like the sound of a double base, the thing what drives you crazy trope has been done to death, resurrected, then slaughtered again, and is nearly impossible to successfully pull off.
Beside that point, you say
but it allows you to hear ranges far beyond the ranges of normal human hearing with the tuning pegs.
Does this mean that you have to tune it to a specific key, and you hear a specific range? Or can someone with no clue what a double bass is walk up to it, start screwing with the tuning pegs and suddenly hear ghosts singing Michael Jackson's greatest hits?
As a final note (pun fully intended), modern skips are expected to have some kind of narrative, not just a thing that does a thing. A reason for why it was made, a person who wants it back, maybe it has a wife and kids or something.
Hope this helps.
