As the title says, what skills do you wish for?
There's bound to be some varying choices among those who wish for skills. It would be nice to hear some.
I've been thinking about it since considering whether I'd wish for gardening. I've wished for alchemy before, just as a source of explosions. That was definitely worth it.
There are a few skills I could imagine maybe having enough use to be worth it depending on your play style and preferences.
Fletchery is exclusive to archers and farmers (and the odd bard) and having lots of ammo to get marks with could be handy sometimes for characters that like to use bows or crossbows a lot. You COULD go run around the wilderness looking for barbarians, hoping one at least one of them might drop a decent sized stack. Or you could fletch logs into nice big stacks with relative ease. I seem to find lots of fletchery sets.
Concentration I suppose would be something to wish for if you had some plans to become a semicaster or something.
Find Weakness would be a good one of course.
Food Preservation might be worth wishing for if you're a fanatic for the skill and chose a r/c combo that doesn't have it for the advantages of that combo.
Herbalism, if you went for healing via the quest and really really want herbalism too. Bonus points if the character happens to be a hurthling and thus has gardening without herbalism.
Mining maybe if you really really really really cared about generating ore and saving time mining.
Gemology if you're really into the mining and really really care about the gems dropping while you do it.
That's all I can think of.