For example, currently the title of the Custom Field post servers as the metabox title.
I think it'd be better if the metabox title could be set separately because the title of the actual Custom Field post could then be used internally and be more descriptive.
For example, I might want my metabox title to be "Artist Name" but the title of the Custom Field post to be "Artist Names for Download Post Types". You can see here that I wouldn't want my metabox to be titled "Artist Names for Download Post Types", it's just convenient and informative for an admin browsing the custom field posts.
Get what I mean?