Goretooth was no trendsetter, he was just unique and easily recognised, same as ctp. Georges a tincan with a flamburger, but nobody was really rocking his setup, or atleast not to that extent that you can call it a trend. Most of the people here play so long I recognise 50% of the battlefield by their equipement, same as they recognise me from miles away.
Trends here across the pond mostly have to do with stats. Kuyak heroes are kuyak heroes because that armor looks good, everybody thinks it Viking shit, but most of all it has great stats, same with the LS or Danish/German. I remember the first clan to rock Kuyak heavy were 22nd and they had a bunch of 2h heroes, sure some people emulated them, but Kuyak was a new good looking armor with great stats, that is mostly what it made it what it is, not people. Same with other weapons/armors.
