On Thu, Aug 6, 2015 at 11:25 AM, Jorge Timón <jtimon@jtimon.cc> wrote:
1) If "not now" when will it be a good time to let fees rise above zero?

Fees are already above zero. See http://gavinandresen.ninja/the-myth-of-not-full-blocks
 
2) When will you consider a size to be too dangerous for centralization?
In other words, why 20 GB would have been safe but 21 GB wouldn't have
been (or the respective maximums and respective +1 for each block
increase proposal)?

http://gavinandresen.ninja/does-more-transactions-necessarily-mean-more-centralized

3) Does this mean that you would be in favor of completely removing
the consensus rule that limits mining centralization by imposing an
artificial (like any other consensus rule) block size maximum?

I don't believe that the maximum block size has much at all to do with mining centralization, so I don't accept the premise of the question.

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Gavin Andresen