Superbladesman i really dont understand who exactly you're wanting punishing more, The only people a larger points deduction would be punishing in the staff/players and fans of Portsmouth and they're not the reason the club is in the ****, Punishing them more will limit the interest in the club even more, Taking over a club with a 10 point deduction is already a problem, 5-10 more point deduction would leave them with a even bigger mountain to climb in terms of finding investment.
You want them punishing more and increase the chance of liquidation of the club, The only people that will be punishing is the fans because noone else gives a toss about them, The fans are doing everything they can to keep the club going and your solution is punish them more all because some twats in suits ran the club they support into the ground and then pretty much left them there.
As for your examples, Leeds were deducted points twice but that doesnt mean as a Leeds fan i should be wanting Portsmouth punished the same way we were or any other club was, I would rather see them start on 0 points if it helped the club get the investment it needs than see a club liquidated, You can talk about how other clubs were punished and how Portsmouth are getting less of a punishment but as a fan of one of those clubs and probably like alot of fans who support a club which has been in the position Portsmouth are now i think you will find we're more supportive of Portsmouth and what the fans are going through rather than demanding more punishment for them.
You might think they deserve punishment more than they have gotten but dont drag other clubs into your views on it because most of the fans of those clubs dont share your views in the slightest and would rather see clubs in this position get out of it than see them punished even harder.