Aside from importantance of retained bike ergonomics with what and how systems are integrated . . .
Aside from a striking avante garde appearance, which may or may not be desired. . .
Looks like alot of skill and foresight has been applied so far.
The bike and mountings are sleek, and controller hides well, but I only notice the one rearward bracket/clamp for the battery. Even with another of equal design and sturdiness towards the front, the battery may not be as secure as desired, due to it's shape/weight/size. These are obviously just impressions from a couple pictures.
A more shapely and thin batterypack would do more justice for the intergration- for mounts, ergonomics, and appearance? If not, beefier/more rigid or numerous mounting points might be called for?