There's an old axiom in design/engineering that goes" light, strong , cheap, you can have any two of the three".You can re enforce anything. Build the frame out of thick wall tubing, it will weigh maybe 10 kilo's, but be very strong. Then a wheel or fork will deform instead. You pays your money and you takes your chances.In the grand scheme of things in the touring world, I think frame failures are way down the list of things that go wrong.
Cheers