The club need to realise that when they let people in for £5 vs Hamburg the place was rocking. If they did the same for the qualifying games in the Europa League, and Group games, they would make a fortune on the sales of food and drink. Then, when it gets interesting (like they have done in other cup competitions) increase the price to recoup some of the money they lost in the earlier rounds and everyone is happy.
Fans think the club are thinking of them, we have a full(ish) stadium for what would normally be "lower attended" games, then when it gets meaty and they know they will sell out, bump the tickets up to £20-£30 and everyone is happy.
Also, reward the SS holders for joining the Cup Scheme with more loyalty points per game, compared to those who don't join it.