You're heard of The Incredibles, and you've heard of the Expendables. Now we have The Incomprehensibles.
Real, actual expediters know it's an exercise in futility to try and figure out an hourly wage for this job. It's meaningless, as time spent sitting is just as valuable, if not as productive. It's an employee mentality, as well.
As for the 50 cents per mile idea, unless the average line haul including FSC is $1.50 a mile, then 50 cents is incredibly out of line. The Rule of Thirds still apply, where one third goes to the truck, one third goes for operating expenses, and one third goes to the driver. On a standard 60/40 split with the driver getting the 40, an 85 cents a mile rate not including the FSC yields 85 cents times 40 percent equals 34 cents a mile. At 80 cents for the line haul it's 32 cents a mile.
28 cents is extremely low, regardless of how many miles you drive in a week. It's an fleet owner taking unfair advantage of the driver. Shippers and customers pay nothing for experience. Loads pay the market rate, regardless of the experience of the driver hauling it. A 10 year veteran takes a load for the same rate that a guy on his first load does. Unless you're just desperate for something, anything don't take a driving job paying a flat 28 cents per mile unless you have it in writing that it goes up to at least 32 cents per mile after 6 months, and 35 cents a mile after a year, because that's pretty much what everyone else is already getting.