Okay European players, here is the answer you have been looking for: Yes you can buy the Founders Package and you will never be blocked from continuing to play on the North American servers. Also if we are able to set up servers in your region you will be given a onetime opportunity to transfer to those regions servers taking everything you own with you.
This means, that there will be a possibility to migrate later on and that everyone (not only the europeans) can buy the packs, too. When the servers will be launched is not known, but there are talks with publishers for european servers and according to Garth it is:
Q: What are these "special Founder 'Mechs"?
A: If you buy the Elite Pack for 60$ you will be able to choose from one of four Founder 'Mechs: An Atlas, a Catapult, a Hunchback or a Jenner. Those are the prime variants but are fully customizable and have a special paint job. Additionally they will have a lifetime boost to your received C-Bills (ingame Money) of 25% after a match if you played that match with this founder 'Mech. If you buy a legendary pack you will get all four of those 'Mechs.
The Founder 'Mechs do not take up Garage Slots. So, when you buy a 'Mech or all four you get additional Garage slots, so to say.
You will also need to choose your 'Mech for the Elite Package before buying the pack. At the moment there is no possibility to switch this, but maybe there will be in the Future.
Q: What does "premium account" mean?
A: This means that you get a 50% boost on your C-Bills an experience points rewards after the match. The premium accounts are tim limited (Veteran 1 Month, Elite 2 Months, Legendary 3 Monts) but can propably be rebought as soon as the game launches.
Q: Great! So where Do I go to buy it?
A: Just visit this page.
Q: Hey, After buying the Veteran/Elite package I get an upgrade option. How long does this stay?
A: Propably until the 7th August.
Q: And how long will the packages be on sale?
A: As it stands now propably at least for 4 Weeks, maybe even up until the 7th August.