Why shouldn't tanking be totally stopped? Its annoying, makes half the games each season a bore, and seems to bore the crap out of the people who do it
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. I can't see any redeming qualities in tanking whatsoever - I'd be delighted if it got wiped.
That said, with a salary floor of around 400K, that should go a fair way towards wiping it out - especially when you consider the fan survey effects of tanking, and the guaranteed drop to D2.