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Now your point is correct - if we aim for a 1cent transaction fee, then a hodl output worth less than 1 cent is effectively worthless (with some caveats). I'm happy enough with that - I see the network as a place for 10cent+ transactions. I think other technologies and second layers are more suitable for sub-cent transactions.
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By my rough calculation, a block of 50 HOdlcoin is only worth about 6 or 7 cents. If you HOdl that block, you must pay between 14-17% at today's HOdl/BTC rates. I think that is overly steep at this stage and more than a bit destructive to the current ecosystem. It will effectively drive out any of today's small time miners. At some point, I do think it could be worth looking at a target fee such as you have proposed, but I do not think that day is today.
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Is it too soon for another change? No, I think either HODL is improving or its dying.
I believe that depends on your definition of improving. It seems to me that you are attempting to progress HOdlcoin which is not the same as improving it.