I like Augustin and I think we should go after him. His size is an issue, but he's got great play making skills, and has a really nice shot. He's already used to the half court offensive game by playing in Charlotte, so I think that would work well under Casey.
He's got a really good assist/to ratio. His stats (this year) are actually very comparable to Felton, but is three years younger.
He's no stud like DWill, CPaul or Rondo, but he may be a better guy to get for a reasonable price ($7-$8M/yr) than hoping to get someone like Kabongo who could end up a bust.