The Premier League and the league below it restarted in June behind closed doors. While I accept it was right to complete the season (and I think, contractually, they HAD to or they'd lose so many millions/billions from TV companies, sponsors etc), I feel they should have just played until the title, europe and relegation had been decided. Any matches in which neither side were involved in the above (in other words, both teams could only finish between 8th/9th and 17th), for me, should have been voided.
I also think the FA Cup should have waited until fans were allowed back in before resuming. Luckily the 4 teams who reached Wembley are ones who regular go there anyway, but the FA Cup is all about the fans and not being able to attend the final (and look forward to attending it etc) and see your team lift the trophy just seems wrong. For the same reason I think Liverpool's trophy presentation should have only happened with fans there - even if they don't defend their title, they'll keep the trophy until towards the end of next season so it wasn't like there was any rush.
Just my thoughts