I think for me that 'everything is the same' thing happens because it's an evolution, not a clear demarcation year to year. So maybe first I see something on a runway look, and then it's in fashion week street style looks, and then the glossy mags, and by the time it is fully entrenched in mall retail it seems a year later almost (even though it's not that long), or it's something like the boho 70's look for juniors which seems like it's been going on for years now.
I think it just happens faster/further ahead for someone following the more cutting edge or early adopters. Or I miss a micro trend that happened, oh years before and I suddenly get interested in it for some reason and of course nobody is selling that thing now, lol.
I think right now I'm more consciously intrigued by the possibilities of a different or new to me color, than by that many new to me silhouettes in blouses or jeans or the nu70's thing. But I'm sure those looks will capture me too eventually. I find shoes interesting pretty much all the time though.