I think they should pick an experiment with a high chance of success and especially high power output. These are hard to be found in the open science realm and I dont know if they want to deal with complicated NDAs of commercial groups.
I hope R20 becomes such an experiment in the next two years. I wish every replicator all the luck of the world.
I dont know the status of the reactors of Russ George and Alan. Is this highly reproducible? They definitly have a large signal. Does Google want to deal with Russ?
I would suggest they replicate Randell Mills. High output - high reproducibility. Older experiments with less output power than today have been replicated at RUB in germany in 2003, in Eindhoven in 2006 and someone here recently posted a master thesis from 2009 where they replicated the effect with a 3 weeks visit of one of the PhDs from BLP. Current experiments have huge output power - but perhabs its not LENR but a different plus energy concept. And I dont know if Google wants to deal with Mills. He seems to be quite complicated from time to time.
Speeking about Mills: has anybody mentioned the electric universe guys from the UK (dont remember the name of their experiment)? They have large excess energy too.
I doubt that replicating these low power/energy experiments from the 90s and 00s will have an impact at all, even if Google successfully replicates them. To say it in Jeds world: if the Wright brothers needed three years to get media coverage while having a flying plane (!!!) I doubt that showing a single wing in the airflow chamber with a force measurement system that shows small signs of lift will achieve anything at all. If they dont find an experiment where they can show melting reactors, rooms heated with a reactor instead of a fire pit etc., their work will not have the effect I am hoping for. So stick with Mills melting reactors, try to deal with Russ or wait and pray that R20 is reproducible, but choose a high power experiment. Thats my opinion.