For what it's worth, if the Nets get reasonably productive and healthy seasons from Lin, TJ, Crabbe, and Booker, by Win Shares it looks like they could expect roughly 19 Win Shares from those guys.
Lin - 5
Johnson - 4
Crabbe - 4
Booker - 6
That's a rather big if, though, considering that those guys have mostly been backups in their careers, and Johnson, at least, has had significant injury concerns.