Yup. Neither have any business being in our best 22.
Get Jones, or even McHenry (despite having a poor game in the SANFL) in for Douglas. Even Poholke would be a good addition now, though, if we went that route, you'd have to hold onto Myles for a block of games, and look to give midfield minutes too.
I know this wont be popular, but I'd be tempted to keep Jacobs as the Angus Graham style SANFL injury insurance Ruckman if is he wants to go on a year for a minimal deal. Obrien has shown plenty and should stay in the side as the #1 ruck moving forward while he's fit and able.
We need to bring in another developing kid now, and that takes time. Assuming Hamish can conjure up a good one, he's still not going to be ready to plug in for injury for a while.