I think it depends on how the kid thinks, here are some of the top reasons for wanting to be drafted by a certain team:
1- Fav team: This is a no brainer and I bet most porspects dream of playing for their fav team.
2- Somewhere close to home: A lot of these kids would like to be somewhere near home.
3- Succesful club: A lot would want a team that knows how to treat prospects and has a winning attitude (Teams like Det, Colorado, and NJ for example), some of these kids don't want to be under a lot of pressure and most successful clubs don't put pressure on their prospects.
4- Young club: Some would like to be part of a young club so they can have a chance to be in the league soon and be part of the rebuilding process, it could also mean that there will be better chemistry off-ice with other players because the age difference won't be much.
5- A city you like: I guess some prospects like to live somewhere for whatever reason, for example if I liked warm weather and beaches I'm gonna like it more if I'm drafted by a team from Cali or Florida, and so on.
6- Unite with buddies or relatives: I don't think it happens often but some who have friends or relatives on a certain team would probably rather be on a team with them, for example if I had an older brother that played for the Flames I would probably like it if I was drafted by them because I'd get a chance to be on the same team with my bro and that makes things better.
I guess there are other reasons but these are the main ones I believe.