Will it be possible to build cars that don’t take on a traditional appearance? Things like LMP and open wheelers?
U mean like race cars? 
Perhaps not prototypes or true open wheelers - I guess it’d be too much work.
Specialist track day cars (Aerial Atom et al style) would be a nice touch but again I suspect its a hell of a lot of work.
Lots of work, maybe one day but not soon 