A question occurred to me while reflecting upon my love of gin and, after seeing EvergreenDan's comment on board malaise, I thought I'd poll the Chow Spiritsers about what they would like the future of liquor to hold: Specifically, what a future base spirit might look like.
Each major category (gin, rum, tequila, brandy, whisk(e)y, [vodka?]) has some unifying thread that makes it unquestionably X spirit, yet each permits variation (e.g. Beefeater vs. Hendrick's vs. Death's Door).
So what would your spirit's dominant flavor be? Apple? Rice? Tea? What about characteristics? Floral? Spicy? Woody? Citrusy? Keep in mind these flavors should be generally accessible and approachable. Art in the Ages' new Sage is a good source of inspiration.
Finally, some points to consider:
Distillation vs. maceration
Source of alcohol (neutral spirit, malted or unmalted grains, fruit eau de vie)
Ageing (if aged, even more considerations: Time, new vs used barrels, etc.)