I seem to remember it was suggested around the time that the OP_RETURN saga kicked off.
I think that we agreed that such a scheme would be better handled at the UI level.
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b) Tiered pricing based upon the long description cannot be performed as the protocol is agnostic to the description.
Thanks led_lcd - pity, tiered pricing would make some interesting possibilities economical. Maybe the devs would we willing to revisit this in the future.