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For me pool hooping here and there should be no issue event for network stability in long run other system that will have not that burden will win.
In POS/DAG/Obelisk people have no choice but support "mining" coin and keep network stable.
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I still think that your critisism has parallels to pool hopping but at ccy level, to optimise fee collection.
Edit: and no blocks for over an hour now :/