There’s issues with both tracks and racks at the moment. Racks are (or were) the method of choice for sheer versatility and editing power, the problem now is, if you can’t unload a vsti and leave an empty slot. The whole rack moves up one and all the instrument id’s change, disastrous consequences if you have a a really large project as all finely tweaked.
With the new track concept, there’s seemingly naming and saving problems, plus if you add another track it goes to the top and seemingly pushes everything down, again the consequences for huge projects could be a disaster.
The new rack itself needs a bit of work on the GUI as well, its a bit out of proportion really and the fonts above the control knobs are hardly eligible as well as a lack of frame highlighting which instrument you’ve just clicked on…typical of a new SB release lol