So we've got this problem of the atmosphere trapping too much heat from solar radiation hitting the surface and the plan is to increase the amount of solar radiation hitting the surface?
It could only ever increase by the surface area of the satellite lens things. It'll be a rounding error compared to the surface area of Earth (or compared to the effect of greenhouse gasses over the time period you're setting up these things).
It's fine just setup mirrors on the ground to bounce the light back to the satellite! (/s)
Exactly. We don't have enough energy apparently and need more warming.