Track Instruments vs. Rack Instruments in Cubase 7.5

+1

I love the new track instrument. Take exceptions like drums for example, where the virtual isntrument is seperated into key ranges (kick drum, snare, etc.) and you want to put those isntruments out on different channels.
But otherwise… I’m on Fantacyzer’s side. I don’t get it. Why aren’t people simply using several instances to keep everything… well… simple?
Maybe someone with such a workflow can enlighten me? Are there any benefits I’m not seeing at the moment?