I will go on record that I believe letting sub holders to buy extra figures a couple days early is a TERRIBLE idea, and I hope they NEVER allow such a travesty to take place. For the sake of saving a few shipping dollars,
A) They would lose out on All 'multiple subs'. Seriously... If I bought a sub and wanted two or three Fistos... I would now buy ONE sub and cherry pick early for any extras I wanted. There's no point in people buying 2, 3, or 4 subs anymore.
B) Scalpers can buy ONE sub... then three days before sale day... buy up 30 fistos each. They don't need 30 subscriptions... they can buy ONE subscription and scalp every popular figure they want... (ok... I THINK they still have a limit of 10... but I hear people find a way around that...)
C) Production numbers based on subscriptions sold... will drop drastically and then the sub holders would buy all the extra figures ANYWAY... Those those who DON'T want every random figure they feel like putting out... end up with nothing.
The BEST solution to the shipping problem... is STOP shipping them early. It's a nice touch, but not if it causes problems... Just hold them at the warehouse, and combine any shipping going to the same address... or credit card number... or give the sub holders and id number or a discount code for shipping that lets them track stuff...
But letting them shop early for the popular figures is a TERRIBLE idea.