You’re absolutely right. “With great power comes great responsibility. . .” so I’d be solely responsible for forming a 50’ wide, 50-mile tall water column directly over the Kremlin, so it can piledrive itself down directly over the Dictator’s President’s Apartment as he sleeps.
Tripler
Thank you for keeping me on my toes.
Here are mines from least to best:
7) Xenolingualism: the ability to speak and understand alien languages fluently. As language go, it seems to work only for humans (or possibly alien aliens 
). Useful to make contracts…or threats.
6) Pressure manipulation: power to manipulate pressure. Without further indication on distance or intensity, that’s not very useful. Weather manipulation at great distance (rain or tornadoes on demand !) or maybe pressure on people. World’s best massager or Squick !
5) Magic vision: projecting magical beams from my eyes.
What are they doing? just an eerie light or Beholder effects?
4) Paralysis inducement: the power to render organisms immobile.Useful as self-defense. If unlimited range and no line of sight required…Medusa effect as in Doctor Stone…
3) Enhanced accuracy.OK, I’m Hawkeye…Useful for combat or Olympic games.
2)Dimensional storage: power to store anything in a fold of dimension/space et re materialize it at will. Ooh! Mass transportation across borders…Elimination of toxic or radioactive waste (if there is more than one pocket dimension)… Surprise invasion if it can affect living things…
1)Power negation: nullifying powers or abilities.Definitely first place if other peoples have (and there seems to be twenty nearby 
) as it ensure I will be unaffected and maybe negate the effects at range. If I’m the only Super, it goes down to 7th place.