Not sure how much of a news story it is. I also want to build the ISS of the sea, I always did. Now, I don't have a famous granddad with whom I share my last name, but even if I did it's not like it's enough to build ISS of the sea. The article is written in a very dreamy tone and contains very little substantial information. It firmly assures that "Proteus will be" such and such, as if they are making the finishing…
Now "would I?" is a whole other question. Human missions are kind of old school now that we have fully autonomous devices such as the surf glider, underwater gliders, animal-tag based telemetry, multiple global satellite internet networks. If I was collaborating with Fabien, I would put that name to use raising money for something a little more modern, such as autonomous monitoring of military hydrophone arrays, measurement of radiation around nuclear sub pens, locating and monitoring the 60+ beluga whales just recently released from the russian whale jail.