I'll leave aside the suggestions I've no real opinion on.

1) I agree in theory. Would be nice but the downside is that Top 7 means you get 2 extra things with below getting nothing. The fact that the rewards are staggered more - 1-4=promotion and CL; 5-7=promotion; lower=nothing is on balance maybe a bit fairer.
2) Obviously, as above, there are license considerations. I'd actually rather extend this so that there are more custom jersey options. I wouldn't have thought self coloured jerseys and hooped options could stray into legal territory (but I could be wrong) - I'd like more options.
5)There are already enough playing demands. Maybe if it was simply the generation of reports relating to internationals. For example "Your player has been selected for X National Squad." Then maybe you received a match report and perhaps a little reward like a skill point or something.
6) Don't actually understand this proposal.
7) Agreed. I'd like career stats taken out of the current statistics frame and put in its own, and some more defensive info put in the space. Then a bit of Hall of Fame type stuff in the Club section where stats and history is.
10) Yeah, SAs for token academy players would seem like a better fit with Scouting System: youngsters from academy and the rest from Scouting. However, good academy players are much faster trainers than scouted players so perhaps its not necessary.
11) Not sure this is needed. The Defensive, attacking and Physical traits already allow this. SA's are what a player is best at. Maradonna was great at most things....but really came alive when dribbling, imo. (Bet he had a huge 'Handling' Q too. )