Hoop Blah I do think it's wrong not to be apply the points system in some way.
How can they apply the points system when there's less than a week between the season ticket exclusivity period ending and the match itself?
Whilst the club needs to respect those members with a lot of points, it too has to maximise the match day attendance in whatever way possible. If the match were three weeks away then it could have a period of exclusivity for season ticket holders and then a decreasing points threshold for each day passing (like they did for the Liverpool match). Given that a significant percentage of sales will be general sale, they need to give them a period of time as well.
Another problem with a short general sale period is that it reduces the club's options should the visiting club request a bigger away end.
Nottingham Forest have a season ticket/member exclusivity period for their home matches and when they were playing Newcastle, Newcastle sold out their 4,500 tickets very quickly and requested for a bigger allocation (not sure if Forest can turn a home section into an away end). Because the home tickets were still in an exclusivity period, Forest (who also need to fill their stadium) had the choice of giving Newcastle more tickets but instead took the option of bringing the general sale date forward for home supporters which resulted in 3,000 tickets being sold in the first 24 hours. By having a longer general sale period gave Forest the chance to get home supporters in quickly and if for any reason, people didn't want to go, then they could decide to give Newcastle more tickets.