Hi Francisl,
I am curious. I am not thinking of benefits atm. I will perhaps consider benefits once I know more about how it can happen, plus see some write ups on evidence.
from you prior posts I consider u to be a heavyweight pro-fusioneer. I only chat about it occasionally as a hobby. If you yourself aren’t aware of p + p -> d evidence or some theory that makes it more common than standard theory, then that itself is evidence against a replicable p + p -> d experiment!