If you put water and oil in a container and they separate, the interface between them is not wet.
Humid air can make things wet, but that only happens when the moisture in the air condenses onto a solid surface. Humid air will not make the surface of a lake wet even though water is condensing out of the air onto that surface.
Hard to tell, but with 30 as world class, I think a lot of people are underestimating what they are capable of.
As for what I would focus new points into; I should take the +1dex class someone suggested, stretching and yoga are good for you; Cha boosts would give me an outsized advantage in a lot of situations....so Charisma it is.
Low tech: e.g. detect and destroy incoming weapons....if a single major power had this, it would bad. They maybe emboldened to use their weapons (both nuke and conventional), as their perfect defense would keep their assets (people, places, weapon systems) safe.
High tech: e.g. directed EMP type weapon that could eliminate any weapon world wide at launch, this would eliminate the MAD doctrine. No-one would be able to launch nukes at anyone. Conventional war would likely have the same driving factors that it does today. But also, it may not get "car bomb" nukes, so nuclear war still possible, just in a very different mode.
Super high tech: e.g. some crazy quantum detection and elimination of weapons that haven't been fired. This would be terrible, basically the group/state that has this power eliminates its rivals ability to retaliate with a proportional response. They instantly become the major threat in the world, this would destabilize any alliances that they have, no one would believe them if they said that they also disabled their own nukes. This would put the world on the edge of WW3 in a heartbeat.
I like it that the site says the max length....this is not common. I wish it was.