Back in May I remember seeing
a suggestion that moderators should leave some kind of an explanation post whenever they lock a topic...
I can't imagine that many mods
didn't think:
Your SMF patch is helpful for forum members to hover their mouse on the icon and see who locked a topic, the topic author or forum moderator, admin.
Topic authors of topics locked by admins or moderators know the reasons, without the SMF patch, because they can not unlock these threads. If they try to unlock, they will see a following message.
After the moderator or administrator closes the topic, the creator of the topic
can not unlock it. If the creator tries to unlock the topic, he will receive a message:

Generally your SMF patch is helpful, and I hope theymos will use it.