add shift frame to sequence layers
Sequence Layers command is very useful but not very fast to use. Most of the time I use it to shift layers of a few frame: I must select all layers, cut them, sequence layers and the trim back all layers to the end.
It would be easier if you can add a sort of Shift time in the Sequence Layers Window, so we can choose how many frames to shift the in point of the next layer than the previous one.
It's not native, but there's a third party script called Rift that would help you. I use it on the daily.