The cherries may have been picked.
I believe there are experiments out there, for gravity waves and on the nature of neutrinos for instance. It seems to me that the questions being posed require long-term and very expensive experiments and those are tough to fund.
The new collider coming on line is one example. It seems that pretty much everything dramatic which could be done with smaller colliders has been done, not all but mostly, and it's taking a huge investment and a lot of time to go to another level.
It used to be that with a kite, nail and glass jar some interesting stuff could be done.
Arf