Bad decision by him to choose Södertälje imo
Why would Södertälje be a bad choice? They usually don't attract the best prospects (which will chose Djurgården, AIK or other clubs out in the country instead) but have done very well developing those players that they got.
Since 2004 theese players was drafted out of Södertälje:
Kopitar
Grossman
Hagelin
Enroth
Wandell
Bergfors
You can add Jonathan Ericsson (drafted 2002) to that.
Thats good work of developing NHL-players for a pretty minor club in Sweden. Add to that kids that could turn in to something good like Marcus Sörensen, Emil Lundberg and Johan Matsson. (given up hope on Tim Heed).
Plus almost the whole team is made up of their own products theese days.
So don't badmouth Södertälje
I think Nylander chose the club since he will be given a fair shot at playing for the Superelit-team in the near future.