Shape shifting would be cool. Now I like werewolves, especially blood and gut chewing werewolves that inspire true horror stories (not the angst soaked ones that give moody looks at other boys wearing glitter). But even if that power were not on the table, but it was the more body shifting, mimicry a la Mystique or material shifting - like changing your body chemistry, or covering yourself with another material like metal, or turning into various animals and other xenomorphs like Beast Boy, or - from the WILDCATS comic series, being able to create weapons... and this power would be awesome for a number of practical and scientific applications (especially if a perfect shift was achieved, but that would entail being operated upon by doctors to study you) though I suppose someone was able to wish or develop super intellect that could build sci-fi futuristic body scanners that would eliminate the need to cut the shape shifter open... you'd only really have to worry (or possibly promote) about someone taking that perfect shift (with potential change in your DNA because of such) and cloning it. Pet unicorns for some, dinosaurs for others! Hurrah!
Now granted, mind reading and mind control powers sound great on paper, you're kind of stuck listening to other people's thoughts, and TBH I haven't really found many people's thoughts to be stimulating - Like, you know, whatever. And as for controlling it, besides being unethical and IS brainwashing, it seems odd for people on the internet, with everyone trying to protect their own privacy, to want to become Big Brother. But... I am totally for being able to punish people's stupidity and the 'look causing immediate evacuation of the bowels' which might just lead us to finding the Brown Note.
Freezing time again has its awesome applications, but it really needs to be fleshed out in what you want from and for the power. Simply wishing 'stop time!' well... if time does not exist (there are some people claiming such) then its no more effective than constantly listening to MC Hammer (though far less enjoyable) but on the other hand, if you freeze all aspects of action within an area, then other things that need to be in movement would stop... like light, so we'd be blind. Or unable to interact with our surroundings. And living forever, there was a Dorkly video comic about how Tails from the Sonic game could not die. I suggest you watch it, since it was hilariously tragic.
Flight and telekinesis would be great, but as mentioned - protective clothing to keep your skin from being peeled off during super speeds and particles from shredding your eyes, and if you are not great at multitasking, or easily distracted, your impromptu levitation session will end quickly if you get totally absorbed into watching a girl jog down the street, moon/sun bathe naked on a roof, or find people getting it on.
As for knowing every language, ect - it is not really a super power. Though it is totally kick ass. I remember watching the first Boondocks Saints movie when they were switching languages back and forth during the interview scene. Fantastic, and made me wish I was more fluent in the languages I speak, so that I could flit back and forth between them as easily as that. But knowing programing languages would be so kick ass. Especially technomancy, or technokinesis - being able to interact with computers and machines with your mind. Booting up computers, running software with your mind, knowing how to use complex computers simply by touching or focusing on them... would be cool. Assuming it somehow prevents you from downloading viruses into your mind. Norton can't fix that. Not even mind bleach.
I'll probably think of more later, and I am not trying to tell people "Don't choose these powers" but rather "choose wisely, especially if you aren't really sure what you'd be getting in the end" - Especially a long the lines of wishes, "I wish so and so great harm" great, you're a monster. Now either you didn't mean for that wish, and are now going to live with the guilt, knowing you ruined or ended someones life in heat of the moment, or you're a psychopath that should be stopped. Congrats, you're now the villain of the story.