1) I sort of feel like there could be a couple things going on. Firstly, I feel when watching this that the one boy somehow feels out of place, or something happened and so he doesn't feel worthy anymore to play baseball. What happened, that I don't know the Team Shirt that had a Number One on it, could be either his old number maybe. Or maybe there was someone else in his family who played, and died. And so the blond boy has to play in his shadow. Secondly, the blond boy is getting his strength from his close friend to keep trying and keep playing. Seems like they may like each other, or maybe they are just a bunch of boys who are afraid of each others touch not sure. But the black haired boy really wants his friend to keep trying, and not to give up.
2) I personally don't like them. I sort of feel though while they go good with the beats, and the mood, it also takes away from the atmosphere and emotion that could be in there way more. Especially with the scenes from: 06-08. Plus everything between the two boys goes by a little fast. I am not sure if you could pick different scenes, or maybe make a couple last a little longer to change the pass up a bit. So I don't feel like theres a face, a head, hands, then face again. More so, so I could get absorbed into it. Example: Have the one face blink his eyes just so the scene goes alittle longer, so I can take it in, before the next scene comes. So you can take what he is feeling in that scene.
I did really like the movement of them swinging their hands up, I would defintely keep that in, I thought that brought a great change in pass, and drew me in at the same time.
3) Was abrupt. I didn't understand why you started off with him lying in bed, then the boys sleeping around him, then going off into the scene where he is crying right after. It just didn't match to me, because its like he was lying there thinking, then all of a sudden he is outside crying. I think instead it would look nicer with maybe scenery from outside where the boys are before you show the blond boy crying. Or if you want to start it off that way, have a little more, so we can understand what that has to do with the story. Because otherwise the beginning just looks not only abrupt but also random.
I think overall its going really good. I think the start of course needs a little more, but for the first 14 seconds I can gather what I hope is going on, or at least the story. I do like that you brought in that little black/white scenes to bring us into the "whats happened"' Makes me wonder what really deeply could have happened. If there is more depth to this than we actually can see.
Hope this helps :3 Can't wait to see it when its finished!