It depends on how much you feel you can depend on Vince long-term and how good you think Josh Howard and Devin Harris can be. I'm not very high on Devin Harris but I think you and I have different opinions of Vince and Josh.
The long and short term goals speak to the crux of what I am saying. Vince and Kidd probably don't have that much time left as top-level stars. (Vince isn't that old, but he is injury-prone. Great shooter though, so that might keep him a star.) So the Nets best bet is to try to win big now rather than be reasonably good later. Kidds and Carters don't grow on trees.
We disagree somewhat, I think Harris can be a real star, at times he reminds me of Kevin Johnson. Howard is already a very good player, but I don't see him as ever being a true star, and certainly not a Vince Carter, "I'll Drop 45/10/6 on your team tonight and win it myself" player.
But your trade scenario isn't ridiculous like some that I have seen.
oohah