The arguement could go either way. Look what the Canucks got with the Sedins. Look what we got with Kane. Chemistry is one of the intangibles that can get you to Stanley Cup finals more often than it won't IMO.
I don't think so, no...
Sedins are not exactly what you call a norm situation... being identical twins and all that. But even then... They were also not drafted for their chemistry, but their skill (and also there is a marketing factor that goes under noticed by fans). They were bonafide top picks that year.
I also think the whole Kane chemistry thing is BS. Kane didn't *look* to make his linemates better, but he made his linemates better. That's the role of a "machine gun" type player. Vrbatta, Ovechkin, Nash, Neal, Hornqvist, etc.
Kane's linemates tended had better 5v5 shot attempt differentials (Corsi) with him than without. Kane's linemates tended had better 5v5 goal differentials with him than without. Kane's linemates tended had better 5v5 point production per minute with him than without. The only player who really did worse was Bryan Little, where the alternative was Andrew Ladd -- a pretty damn good player.
So... about that chemistry then.
Chemistry is more about putting players in situations where they succeed. Certain players have differing strengths and weaknesses and you can use players skillsets to place them in optimal situations.
It's faulty thinking like this that leads to Kunitz playing on Team Canada over Hall or Seguin.
Don't draft for chemistry.