XP should be faster on a beta test, then an instant 50/full gear beta. I see the beta needing to go on for quite some damn time. As long as fixes steadily roll through it, people will be happy knowing that "it's only a Beta".
That said, do not release anything that is a complete mess (even a beta imo), people will turn up their nose and run.
Release something classic, not "balanced" with welcomed "balance suggestions". This isn't WoW
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