I loved reading this setting, as it came alive with so much more in my mind while doing so. As every Patreon World of Adventure, this has a really good world description, some special rules (the teamwork/morale are top among them) a sample adventure with sample characters and plot hooks for further GM interaction.
I've seen in Patreon and here that the wheelchair is getting bad reviews for it's inclusion, but after seeing Sue Austin amazing TED talk, I must agree that most blocks aren't in the sub dimensions, they are in the peopl'e heads. Nobody says he can't access ALL the submarine in the Wheelchair. But he can access most of it. Just remember that these are subs that don't resemble ours at all, designed for very deep exploration and with futuristic tech. If he needs access to any other part, he can control a repair robot or drone.
Another thing to remember about the cast is that it may seem biased, but if you look at character creation, you'll see that everybody in the crew has a powerful reason to leave the surface world behind. And who has more powerful reasons to do so that exploited minorities? In this, the seting is great, a little nihilistic and tecnopunk without reaching full ciberpunk. And it's because all those things that people don't like are included that this point of the setting is driven home better than anywhere else.
It makes for a really claustrophobic setting, not only you are in the sub, you are limited to sub life, in submarines or submarine stations. Your life will be forever limited by those enclosed spaces, and even the deep sea suits are designed that way. And the deep sea is unforgiving and full of greed and misteries.
[5 of 5 Stars!]