history has shown that graphic engine rewrites take a very long time to perfect... so they have at least 1-2 years of work ahead of them. So do they just let the crowd dissipated, hoping that they will return in 12months time... or just release it as an Alpha to keep people interest. Once people change their habits it is very hard to get them back.
I am just very concerned this will go the way of duke nukem... they had graphic engine rewrite after graphic engine rewrite... the money will eventually dry up... and this being a company they are driven by accountants and run on money...not programmers skills or users' admiration...
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good luck but the clouds are looking blacker...not clearer.