1.No it does not have any effect on the player or his formation
2.You have to stick on to the range provided!! there is no other option!!
3.Hmmm no ..there is absolutely no benefit in sacking a player ...You need to pay a specific amount while sacking a player but sometimes if you have a player who is a burden to you..like a 33 year old player ..then if you want to get rid of him ..the only way is to sack him cause ..no one is gonna buy him in the market!!
4. Well 7 is a decent rating,8 is really good and most of the time when a player achieves 9 rating then he wins the motm!! 10 is almost impossible!! :P
5.There is no much difference when you compare teams but if you are comparing players ....it does make a difference cause if you are 1 quality more than your opponent team then it doesnt make a big difference to the result but when it comes to an indivitual it makes a big difference cause you need 15 skill points to gain 1 quality!!
6.You lose Moral when you lose matches and the when you win matches your morale also increases but not much..better way is to get those blue packs and use it to put your players morale to superb!! Trust me Morale of the team plays a huge part in the teams success!