Worth to buy U21 players to be generated as talented as your team (as in real good teams academies mostly generate good players and the opposite), with occasionall 5* or/and SA players. In general more involving in creating a player could be interesting. In this case i would not mind to pay the price or even more, (dont shoot the choice remains on you)
More random team Q pairing among teams playing in competitions.
A real worlds alike Cup (Not so close Q teams as in CL and L i dont mind to loose from a strong team but i have to find the way up an easy one also, variety is needed to simulate it better)
The game is to narrow constructed (much on behalf of managers affect litle, too close Q teams allways grouping, allows autopilot playing not really giving the disadvantage they deserve in comparison with very active teams, no variety on U21, all that are giving few choices in what style (casual or not, lol ) everyone want to play the game, more choices could also be healthy against moaning, no one is moaning when he know what he deserves.
I am wondering what the f** i am writing all that time but i think u have got an idea about my last's paragraph general suggestion.