Now development of hypersonic missiles is a trend among most technologically advanced countries so in 2070s the will be at service.
Pros:
- Wery hard to intercept via close range AA
- Can penetrate hardened structures and bunkers
- Can be outfitted with both conventional and nuclear warheads
Cons:
- Can not evade much on trajectory
- Require certain altitude and velocity to perform a launch
- Very expensive compared to other missiles
- Can be somewhat inaccurate(you can not hit an MBT with it, perhaps you wouldn't need to)
Although it could be difficult to balance since nowadays hypersonic missiles seem invincible when they are deployed in real combat.

