Photons vs gravitational waves

Are the measuring of gravitational waves the wave of cosmology's future? Einstein taught us that matter and energy bend space time (what is commonly called gravity) but this bending can create measurable motion across the universe if enough mass is moved. Light measurement has its limits, particularly when trying to measure Big Bang effects because at around 380,000 years after the Big Bang is when light is visible. Prior to that era is a cloudy field that does not exude light. However, it's possible we could measure gravitational waves from before that time. Gravitational waves do not have the limitations of light.  In space, hypothetically, two ultra cold atoms could be positioned outside spacecraft and when beaming lasers between them any shift in the distance even by a tiny amount can be measured indicating a gravitational wave, providing information about the beginning of time but also providing potential info about other cosmological events that light is limited in measuring. Light forces us to only measure where there is light and changes in light, leaving out dark corners of the universe.