One who initiates or popularizes multiple unconventional/out of the box trends good for long term for the field(s) he/she is active in.
Doing things done never before & setting new trends with effective use of creativity in an inspiring manner.
In a nation obsessed with traditional careers, Trendster Anand is only undisputed World Chess Champion in history who inspired numerous people to choose a career in sports.
A person who recognizes trends before anyone else and then by the time other people start to catch on (like the hipsters) the trendsters have already moved on.