My experience with gpus was x11 ran cooler with higher hash rates and less electric draw at the plug.  Less electricity on the same gpu with higher hash rates is more efficient.  Yes the chinese may still mine with asics whether x11 or 256 and dump but, I may stifle that a little by raising and taking TX fees and placing them in a donation account instead of adding to block rewards.  Every so often the community can vote which organization to donate the funds to i.e... planting trees or cleaning up the ocean.  It's less profit for the farms and if they still mine, their electric can contribute to a good cause.  Though, less profitable to the rest of us also.  Simple example at 10% at current market, we're talking a mere $.03 per block.  3 pennies.  Over the course of the year at current price, it would be around $15000.00 to donate to a good cause.  And, their are people out there that would mine for this simple reason.  Maybe even raising the price a little.  I would also be willing to put up a 0% pool just for this reason to help offset the TX fees.