Hmmm... It's strange to associate them with the 7 deadly sins... but I have to agree with you about Atsushi (lol)! For the others... eh, not so much.
For me, it's more like this:
Akashi > Wrath
As much as he's guilty of pride, he's more guilty of wrath (for me). He doesn't show it in his adorable face (okay, maybe he does, coz his eyes can be scary at times), but he is prone to verbally abusing his opponents. I dunno, like belittling them or seeming to underestimate his opponents when he's not actually doing such, always saying no one can beat him, stuff like that which makes you feel like shit and no hopes of winning. Oh yeah, let's not forget the scissor incident with Kagami. And the "I'll kill you" threats, "I'll gauge my eyes out if we lose", etc, too.... scary.
Kise > Pride
His copying skills (comprehension+adaptation skills more realistically) is indeed something to be proud of. Though he doesn't really boast about it but Kise does it in another way (through plays). Oh yeah, let's not forget about Ki-chan being so proud of Tetsu~
Midorima > Greed
I'm not really sure why but I guess it's because of his obsession with his lucky items! He just won't let go of 'em no matter what! And maybe because of that small incident where he selfishly requested to pass all the balls to him in that one game (Shuutoku vs Seirin during the Interhigh was it?). But my reason is mostly because of the lucky items. Also, greed, green... yeah!
Aomine > Sloth
Sloth is just oh-so-perfect for Aomine! Really! Coz all of the Kiseki's are hard-workers, but Ahomine's the exact opposite! He would always skip practice, take naps in the rooftop... basically just being a lazy ass all the time. So, yeah.
Kuroko > Envy
Though this is something I think he's overcome (or maybe not), because Tetsu doesn't have the physique of a regular basketball player, it won't be a mystery if he's jealous of the other players... (sans Akashi with height LOOOOL!)
Murasakibara > Gluttony
Very obvious indeed.
I honestly can't put Momoi and Lust together!
Satsuki's crush on Tetsu is too pure to be associated with Lust! Heck, it's nowhere close to Lust's level! I just can't see Satsuki in that light... Envy, on the other hand... yeah. But Lust... No, just no.
However if it was Haizaki, Lust definitely fits. After all, he's a womanizing little fiend who even stole Kise's 'girlfriend' during middle school!
-edit-
Speaking of Kise, I totally forgot about him! *facepalm*
Edited to add him... xD
R a i n b o w P o s t ! x D
Edited by Hikari, 03 July 2013 - 07:27 PM.