Heyah,
while working on the topic permalinks plugin, I realised that there is no way for the Administrator to add, configure or edit our new awesome custom-fields other than going into the Shell or Database and do it manually. Which makes it a quite hidden feature.
I’d propose to build a general-purpose modal-dialog similar to the administration interface listing all existing custom_fields and allowing them to be edited (and maybe other fields added) by administrators. Here is an example sketch for what this could look like for a topic:
I’d propose to make this accessible through the topic wrench per topic, the administrator-wrench per post, make it part of the category-edit page and add a button for it on the user-profile-admin-page.
What do you think?