I'd say yes.

Regarding SSL for the nxtcrypto.org wiki, no, this was not discussed when we discussed opticalcarriers application, so we should probably do it now.

Generally, the problem with exit point operators being able to read the unencrypted communication going through them in the Tor network is valid.

I don't understand though what exactly needs to be protected when editing a public Wiki. I don't see the security problem (and there definetly is no privacy problem in regards to tracking the editor's IP when editing the Wiki through Tor).