Is it possible to implement timeline with multiple rows/tracks?

[paweb]

I mean this kind of timeline with multiple rows and the item width varies in each row.

I have been testing and investigating this with Flaslist and couldn't make it work. Is this kind of feature in the roadmap?

The only way I could make this work decently was by stacking multiple Flaslists on top of each other and then synchronizing the scroll behavior. This worked pretty ok when I had only a few rows/tracks but when I had more than 5 it started jerking a lot.