Yes, but then it still uses third party tool (actually there are lot of them including bpip), well, at least for fetching users. What i mean is only dependent on forum software/records.
You can. Your trust settings can include DefaultTrust, which by itself will show the DefaultTrust list at depth 0. DefaultTrust is meant to be a reference anyways, once you've been here long enough you should establish your own web of trust.
https://bitcointalk.org/index.php?action=trust