I think the question has to be "what can they do to get people they have alienated back". They have lost the trust of a lot of people here.
lets assume 2021 is a blow out, and lets focus on 2022 and assume they are at PL for that season. Here are some of my idea's for 2022
Two levels of Season tickets :- 25 in main stand, and 15 to sit behind the sticks.
Over 65's / NHS workers:- 18 in main stand and 12 to sit behind the sticks
50% off for those who are also Wimbledon ST holders as well
first 2 under 16's free if at least one adult is in the party, £5 for each kid after first 2 free
Arranging parking with nearby schools (like we did at Brentford), charge £5 for parking pass per game
During the season target a couple of game for special offers (say games vs York / Newcastle), non RL people will have heard of those towns (unlike fev \ batley for instance)
Play womens game as a curtain raiser before the main game
Get the local schools in to play mini games at half time (we used to do this all the time, this got local schools involved, and the kids loved playing on the pitch for 15 mins)
I'm sure others have idea's here which could help, without getting into negatives on what is wrong right now (and no I don't expect the club to listen to any points I might raise)