If we were to do this in a step cycle process
Step.1) Start enforcing 10 min bans ALL the time
Step.2) Change 10min rule to 7minutes
Step.3) Start enforcing 7 min ban all the time
Step.4) Changing 7min rule to 5min rule
Step.5) Start enforcing 5min rule all the time.
And to make sure admins arn't getting overworked, make it a min 12hr ban if you come late to a pug. Severe punishment = better results in rules getting followed...
I think the biggest problem to get this implemented is taking the intial beating of having pugs die because someone showed up late and got banned + no sub avail. At first there will be a lot of RE-pugs because of this, but people will start to smarten up and learn and we'll be back to normal, click in and ready to roll!