I think there's always some fun to be had with Wish spells, even if you give them exactly what they want.
"I wish I were stronger." is a bad wish because it's too open ended. Stronger than what? How much stronger?
"I wish I were stronger than an orc." Is also a bad wish, again, which orc?
"I wish I were as strong as the average orc." Okay, that's better, if your DM is reasonable enough to take the MM Orc as an average, then they could put you 1 or more points above that. Seems reasonable.
"I wish I were as strong as a dragon." Again, which type? Which size?
Personally, I always play with wishes a little bit. I give them what they want, but make something the group is going to have fun with as well.
One person wanted to speak better (in a game with stronger language rules) so I gave him a magical top hat. His character now speaks the King's English (silly British accent and all).
There's a happy medium wish wish spells where a person can get more-or-less what they want, and still have fun with imperfect results.
I personally don't think I'd complain if, after wishing to be as strong as a Storm Giant, I was turned into a Storm Giant.