I’d like to be able to do art. Just to draw or paint a picture that doesn’t look like something done by an elementary school student.
I’d also like to be able to play guitar. I can play a number of other musical instruments, I can sing, and I can read music. But for some reason, the guitar eludes me.
Do yourself a favor, and read “Drawing on the Right Side of the Brain.”
Playing the cello.
Musical ability. Not just as a technician reading music. Being able to create and write music. So I can pick up more chicks.
The ability to be multilingual. I have no natural ability to learn other languages. I would like to know at least one other fluently. So I can pick up more foreign chicks.
It’s good to have a focus. 
I also would love to be able to learn languages readily. I have been living in Montreal for over 43 years, have taken courses in French, have tried to speak it, etc., all to no avail. I still cannot understand a news report on the radio or have a coherent conversation. I took three years of German in college and still cannot speak that language either. Some people learn languages about as easily as I learn math.
Learning languages easily is the one I’d like too.
I am actually fairly good at it, but I’m sure I’d have been a lot better if I’d learnt languages as a young child - I didn’t start till I was 11 and then the lessons were terrible, thanks to a badly-behaved class and a teacher who was off sick most of the time, with cover teachers who didn’t actually speak the language; really I didn’t start till I was 16.
I lack this too, and I think it is actually something physical - a neurological disorder or something. I’ve worked on it a lot and have improved, but I’m still really terrible. Mind you, I’d probably weigh about a stone more if I didn’t always have to walk three times the distance to wherever I go. I build in substantial ‘getting lost’ time to my journeys.
Being able to speak fluently.
I can do it sometimes, when the planets are lined up exactly right and my brain and mouth are in harmony. But most times, if I have to string six or seven words together, I will flub up somehow. When I listen to people speaking without stammering, mispronouncing, backtracking, and with normal intonation and speed, I am so envious I could die.
I also wish I could dance and move gracefully.
I’d like to be able to fix things.
My brother-in-law is like that. He can fix anything, make anything, redo his bathroom over a weekend, repair his cars, stuff like that.
He is a very annoying person - he can fix anything, he makes a buttload of money at his job, he is good to my sister, great with his family and mine, and on top of that he is a genuinely nice person. So I can’t even resent him.
Regards,
Shodan
This. And to juggle.
I would like to:
Play a musical instrument decently.
Be sociable.
Have some artistic ability.
And be rich.
I’d like to be a handy builder. I can draw and design, but not actually build. I so admire those with such skills!
Yes, this! I want this too, if only to be normal.
Of course you can! Resent him for being a know-it-all! 
Anyone can whistle.
That’s what they say…
easy.
Perhaps we can swap. I can draw, and I’m working on learning French*, but I’d like to be able to read and play music. 
I’d also like to be sociable, able to do that small-talk thing and figure out in the moment what the appropriate social thing to do or not do is.
I’d also like to be able to recognize and remember facial identity.
[sub]*I’m a sucker for a French accent. Of course, I am also a sucker for a Romanian accent, Russian accent, Scottish accent, Australian accent, Hungarian accent…[/sub]
That bastard!
This will sound like a joke answer, but it is true:
I’d like to be more skilled in dealing with the opposite sex.
It’s not a big issue for me now, being long married and not looking around, but, back when, I would have liked to have been better at meeting and interacting with women (in those days I would have said, “girls”). I get along with them fine – in fact, I was (and am) a considerable flirt – but I had no idea how to move beyond that to anything further. I still haven’t any idea.
I’ve had an OK number of relationships in the course of my life, but in almost all cases, I was asked out, rather than being the asker.
I don’t wish to have been a pick-up artist, but there were times when I wished I had at least a little game.
After thinking this over, the non-super ability I’d like is to be good in math. Really good. Fantastically good. Because I’ve always been crap at math and had to struggle with it, and it’s a basic skill these days.
This. I want charisma. I currently have a negative amount, which makes for a remarkably unpleasant life.