<p>Yes I appreciate it is not easy to know the right length but I still think there is value in encouraging a minimal amount of text.</p>
<p>For your example of "this road is closed" there is a good chance that more information is required to update the map. Is the closure permanent? how much of the road is closed (e.g. between junction X and junction Y)? And so on. I certainly would like a bit more info before making a map edit.</p>
<p>In the absence of any stats/evidence, may I start by suggesting a length of 50 characters as the level where the nudge indicator goes green. Uses can of course add more or less as they see fit.</p>

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