I really do like the 'incredible damage' modifiers. You compare two identically swept away houses, with the former having little contextual support and the latter with grass scoured out of the ground, shredded tree snags, and cars turned into little crumpled metal balls, and it's immediately apparent which one is truly violent. I know surveyors document and take into account these things but I think maybe there's not enough put into non-DI indicators. The Hamilton house destroyed to seemingly EF3 level had only medium-end tree damage around it, so maybe a case could be made contextually for the lower rating. I dunno.