The Timeline is an experimental feature only present for lag compensation on the server-side. I personally haven't seen anybody using it yet. You can add it as a dependency in your client-side and take the snapshots whenever the state updates if you'd like to.
There's a big difference between lag compensation and client prediction techniques, though. I think you're looking for client-prediction. Unfortunately, the framework doesn't provide an easy way of doing either.
Ok, thank you. Oh yeah, I did actually figure it this way, but in this case, I'm worried about performance, as it would need to do 7x (10x, if I would also include the scale) more callback calls as if it would just return the array. So the string solution does work ok (.split('|')/.join('|')), but it sends/receives more bits of data.
Mean, for now, there is no way to hack around, so I would be able to get an array in "one batch"?