Rondo, Lebron, Durant, Love, Howard....Kobe is just too old at this point and Love would bring more rebounds and inside presence.
I actually strongly considered Love. Rondo is a good rebounding guard and Lebron rebounds well. Howard gets plenty as it is. Kobe, Durant and Lebron are the scorers. I didn't necessarily pick the best at their position(PG in particular), but the lineup I think would be best together
He is vastly underrated IMO
You said you were sticking to their natural positions. Durant isn't a 4 or anywhere close, really. Also, Wade is currently better than Kobe in just about every facet of the game and it's almost not close.