I see that Pitbull/Wishlist is now empty. I assume it's because of the loss of the database. If I'm wrong, I'm happy to repost this again there. ;)
My suggestion is that it'd be great to have "target" as an optional bar for every unit frame. I'd suggest that these be in addition to, rather than in lieu of the optional "target" frames that exist. That way people who want to have Pet Targets (eg) frames can still have them and folks who want that target to just show up as a bar in the same frame, can have that too.
I've sorta simulated that with my Target of Target frame, but haven't uploaded a screenshot of it yet. I'll do so later and update this post.