This should be a standard editor feature. The inspector view is too limited and the preview is useless I should expand. Most games out there a focused on character/avatars (yeah there are puzzle games out there but even racing games can be considered character games). Since unity has recognized the need for game foundations I believe one general aspect they can make a difference is in a unified character editor system as the competition has. Right now we have unity ik rigs, the very very old ragdoll system, and mecanim. Setting up your character with all the bells and whistles (ik, vfx, sfx, event, hitbox general colliders, anim state machine) could be streamlined. The worst part about the current state of things is that we cannot preview character modifications and event alignment unless we make a test scene every time. The preview window is non interactive and a glorified video player. Multi editor screens might be a solution as unity realizes these with the mecanim rig editor.