If I were to go that far with integrating/hiding the cables, first off I’d use AXS… but then for hoses, I’d make them black, and use levers that had the hose exiting the lever nearer to the bar (a la Trickstuff Piccola, the one without the mega wait), then drill the bar and run them through that, into the stem and steerer so you wouldn’t have that big loop still. And run the front brake fully down the back of the fork leg.
The way they’ve done it makes it look more cluttered than standard, not helped by the coloured cables, IMO.
I’ll be there, what’s the worst that could happen?