[handol]

The detonation produces higher pressure and temperature, causing higher exhaust gas velocities. More energy in the exhaust means more push from the same amount of propellant. About 15% more. The other yet to be realized in practice advantage is that by eliminating the compressor stages on a rocket engine its construction is simplified, and despite needing a much stronger combustion chamber, it could actually be lighter.

If it can live up to more efficient, cheaper, and lighter then it will certainly see widespread use.

There are bound to be issues with new larger designs, but nothing show stopping is expected.