OpenID log-in filed on the comment form when anonymous commenting is disabled

[carioca]

Title
OpenID log-in filed on the comment form when anonymous commenting is disabled

Short, concise description of the idea
Allow OpenID users to log-in from the entry page in case anonymous comments are disabled.

Full description of the idea
When OpenID user tries to leave a comment on the entry/journal where anonymous comments are disabled, they can do so only after they have visited the main log-in page (which is inconvenient). There is no OpenID log-in field on the comment form when anonymous comments are disabled, which makes OpenID users' experience less nice and generally discourages them from commenting. The idea is to add the OpenID log-in field to the comment form even if anonymous comments are disabled. It would also be great if after logging in user was redirected to the page from which he or she has logged in.
An ordered list of benefits

• OpenID users can comment their friends' posts with less hassle

An ordered list of problems/issues involved

• Can see no problems with that