Right, but wouldn't we still be thinking of it from a Celtics view?
I'll give a crazy would never happen example. A random team, say the Knicks, says James Dolan told us to make a splash right now, we'll give you our #1 pick for any of Horford, Rozier, Hayward, Kyrie or any of your future picks, you'd have to rank them in order of what value they have to you and decide if that pick is worth the asset you ranked lowest.
It doesn't much matter to me what other teams think when I'm setting value on the Celtics assets, I'd decide what each one was worth independently of what any other team thought. Say, if a team wanted Horford but couldn't afford him, I wouldn't lower my value on him. I'd just say tough luck to that team.
It's still an order of assets for my team. If the Celtics stunk, Horford would be lower. Since they don't, he's much higher. I don't see how you can do it without factoring in the team.