If you think Tor will hide illegal activities, you have been deceived. Nothing is private anymore and we should know that.
Tor is indeed no longer the illegal safe haven, but people still don't seem to realize that. Same basically goes up for people fully putting all their trust into the "anonymous" nature of Bitcoin to hide their activities. Especially when it comes to dealers just having made their entrance in the Bitcoin world. They sell their stuff for Bitcoin through whatever deep web market, and then cash it out via the exchange they verified themselves at. How stupid can someone be... Other than that, Tor integration will not do anything for OpenBazaar when it comes to gaining popularity among the regular people.
The regular people will not be able to track you down without some pretty impressive skills.
Yes, these agencies might track you down through
Tor, but if you not doing anything illegal then you do not have to worry about them. I think most people still think Tor is anonymous and they
might access some of these dark markets and then get busted for doing it. Snowden has shown us how effective these agencies are, even if you
using Tor.