Some quick ones:
The board seems to accept improved youth recruitment 2 months + 1 day after the start date of your save. The higher determination of your manager, the higher the chance the board accept. It also takes an OK club economy.
Untick "keep scout reports updated" in your shortlist if you dont want the same players appearing in the scouting cards over and over.
When starting a save add custom data atleast all international team players for all continents for more exotic players and newgens, flavor and immersion.
It seems to me that players need to be scouted fully to see if they have "big matches" attribute or not. Can only be seen for players 22 years or older.
If your club played in continental competitions just before your start date, the economy can vary alot depending on how far the RNG took the club in the continental cups. Restarting the save a few times before going can make a huge difference in prize money and club economy at the start. Also in club national ranking points, national club coefficients and places in cups. I had Swedish clubs taking like 10-15 points in some start giving them 2 spots in CL instead of just one in the second year of the save.