But suggestion of such a novel technology is not easy as you see
I have never said it was easy. I don't foresee anything myself.
The light itself is the best information package for us to figure out what has happened in the universe and will happen (thanks to spectral analysis). We will be developing more reliable measurement methods based on light detection in the future maybe.
I am pretty confident that we will. Maybe not on a 4-5 years timescale, but on a couple of decades, this is clear. There are plenty of experiments being currently proposed, designed, etc.
Desperation comes from the fact that I am not an anticipation-lover kind of person to see the exact results
Ahah I see :)