Legitimate concerns for franchise mode

Yes, I don't understand why the coach and line chemistry feature doesn't work better given its big unveiling and how central it is to the game. I am trying to play by EA's rules for the game. So I fire my head coach to hire a coach who has strategy preferences in line with how I want to play (tough enough to find that coach given so many are standard offense and normal/staggered defense but I found him).

I then have to go manually update the strategies myself, they stay set to the old coach. I then look at scouting and line chemistry and am not confident it ties to the new coach and the new strategies, not the old stuff. Then I see scouting reports that sometimes even say "In (insert old coach name here)'s system". So then I trade for players the scouting report says should fit and don't get the boost in chemistry I expected.

It could be because my new coach is a B- not the A- guy he replaced, or it could be, and I have a sneaking suspicion this is the answer, I will get to the end of year 1, everything will update for year 2 and I'll find out I traded for a bunch of guys who don't really fit my new system. 

It's a joke, this is how EA wants us to play the game, I can't just go and set my strategies how I want like with 19 or previous versions, but your system doesn't work EA. It's why by January I usually say eff it and go play FIFA, but s-- you make money off me there so what do you care?