Thanks!
I think this is correct-ish:
seedRandom(thisComp.layer(“Null 11”).effect(“Random Helper”)(“Slider”),true)
But I’m not sure it answers all your questions, sorry:(
Otherwise, yes — different for each fade in. I was hoping to make one layer and then duplicate it 5 or 6 times. Also slider plus the index, so that layer 1 and layer 2 differ but are still very similar.
There’s also a position expression that I deleted by accident. Very simple though, the position moved time*index.