The B-1B with several dozen JDAMs of sizes from 500lb to 2000lb can cover a lot of battle space.
Especially if also equipped with anti-armor cluster bombs.
One could likely do the work of a full squadron of A-10s.
From 50,000 feet.
Yes, but that is not the only so called CAS mission. The first week in IRAQ, it worked, after that , not so much. That is the point.