I won't being doshing the value of any Atherton any time sooner, but IF, I was considering, it would definitely have a 48V system.
Have a battery with smart security system, geometry is key (I for once like short chainstays, and steep HA, don't mind for a less steep SA so that long reach don't end with a short TT, and/or High BB!
Definitely would like to have a more centralized CG as Lapierre overvolt. - middle mount battery.
And would definitely love to have 2x400Wh battery with a possibilty for a Range Extender for those very long rides. [2x400Wh would allow only 1 battery for 1h ride, without extra weight]