Firstly, Fender has come up with a number of winning design and tone concepts over the years which have gone on to be industry standards. Re-combining them in different combinations to make new models seems like a no brainer to me.
Also, I've always liked a number of bass body shapes, and have felt left out as a guitarist. I've contemplated bastardising a bass kit or two with a guitar neck. I'd be more inclined towards an Ibanez or Yamaha bass shape than a Fender one, but the concept is there.