A low-tech solution
I think leaf blowers are a noisy useless abomination. A friend recently bought one at a garage sale and uses it to blow-dry his motorcycle after washing it. Now that actually makes sense.
The F1 link here is: why not have a few high-powered leaf blowers at every corner marshal station so marshals can quickly and effectively blow carbon-fibre fragments off the track surface? It would definitely be quicker than a broom, and a sharp corner worker could clean off a whack of asphalt in short order.
Depending on the horsepower of the leaf blower, you might have to strap them onto the backs of your more ‘Clydesdale-like’ corner marshals – or you could pull the cord and see your corner worker lift off and fly over the grandstand.
Just trying to help!