Well the reason for not just getting a bigger hub is that it is not that easy to find one with more than 7 data ports (like the one I have) and if I would find something with like 10 data ports I would very quickly fill them up and have to worry again.
The reason for not putting hub into hub is stability. I fear that if there is a further cable-connection involved, dropouts might be more likely to occur, which I don't want to happen. Tough I am no expert on USB, I just had bad experience in the past with stuff randomly disconnecting so I want to keep my connections as simple as possible.
I might give it a try to connect the 802 to a Hub and see how it works for a while. Still if someone can confirm that the 802 runs just as well on firewire + adapter as on USB I would much prefer that route as i could make use of the unused Thunderbolt ports and have 1 more available USB connection.
Right now I need the hub to connect a Midi keyboard, a CD drive, 4 harddrives and a connection to a smaller hub which hosts an ilok and an elicenser (which it handles quite well but other stuff drops out). Still if I want to temporarily connect my phone or a small USB drive or any other peripheral I need to disconnect something. For this and also because I am planning to add 1-2 more harddrives and probably some other studio devices that might run over USB I want to buy a second big hub so that for a while I do not have to worry about available USB slots.