This - ending the bubble will never happen, and it shouldn't. Mayhem will break out, and it's back to the norm. The difference between our game with them and Liverpool/Everton or Man City/Man U etc is that both sets of fans are within a close geographical distance, they mix, ,they work together, they may go to the same pubs, they are aware of each other and respect them and keep their distance rather than fight.
What is needed is a change in how it is organised. Not depart 3 hours before KO for a game 45 minutes away. Leave 75 minutes before KO with every bus leaves at the same time with an escort to the door and open the gates, no separate tickets needed so no need to scan individual tickets as only those who have paid for tickets will be on the buses.
While keeping the bubble it can be run so much better.