sequence layers very unintuitive

[Joolsey1973]

Is there a really quick way to offset key frames? 

I got hundred or so layers which is got to fade out in reverse. 

Sequence layers very is just terrible for trying to do this simple task. It just takes me forever to get my head around it.  Even when I get it working the timings are not quite right.

Are there any free plugins that can make the task easier.

I did find a expression gradient driver but it is too memory intensive. 

Thank you in advace.

[ShiveringCactus]

No plugin, but it occurs to me thisLayer.index might be a solution, I've just had a quick experiement and if you set keyframes for one layer, then use this expression on the opacity for all other layers, you get them fading out in sequence:

thisComp.layer("Shape Layer 1").transform.opacity.valueAtTime(time-thisLayer.index);

Each layer's index will be a different number, so time-thisLayer.index is duplicating the first layer's value 1 (or 2 or 3) seconds afterwards.

EDIT:

I should have dragged the Shape Layer 1 layer to the top of the timeline for the fade outs AND forgot to mention that if 1 second is too short, you just need to add a multiplier to the time-thisLayer.index bit.

[Joolsey1973]

Ok thank you for this. I will have to try it and see if it work.