I asked hope. They don’t make them, but said they’d consider it if there’s enough demand.
So send them an email, let them know the demand is out there.
You’d need a lathe to drill them out properly, if it’s not perfectly concentric you’ll get disc wear issues.
Also, there’s not much (5mm each side) left to support the wheel on the skewer, so with bigger discs at least you end up with some wear on the skewer (from pics I’ve seen). If/when I get around to making some, I’d also turn some spacers on a lathe to spread the load better.