The main thing which is wrong football is the level of money and the way the whole system is intended to keep the top teams rich which makes it more likely that they stay up there and sod the rest. Seeding and Group stages promote this. Football was a lot better when teams like Coventry and Wimbledon could win the FA Cup against the odds. that was the very essence of the 'magic of the cup' which is sadly lacking now as it's overshadowed by the CL and the top teams usually steamroller the rest and most years one of a small group of teams wins it.