I don't really know if this proposal made by the user Kattkieru for Blender's Outliner is in development, but I'd like to express my vote for it! :)
I use the Outliner a lot, and I must say that I'd love it to be a more complete tool like described by Kattkieru. If it's not in current development for the upcoming Blender version, here's my vote for it! :)
Be sure to read the complete proposal.
Oh, and today at 5 PM (GMT-3) will be the premiére of the animated video "My Favorite Way" on MTV! Tomorrow I'll post it here. :D