Way too early to call success and say this system is working.
It might be, I am hopeful, but way too early.
Of the three, Jax is the most surprising for me. I really feel he could be a good RP, and I feel teams do a disservice to guys like him in general. They try to keep them starters, and they end up making way less money and way less ML appearances than they could have. I hope to be wrong on him, but I really like his odds as a RP much more. That said, sure, this year? Keep him as a starter unless you want Strotman and Ryan to get starts.....
Ober has a real shot, imo, to be a 4/5 type. Every team needs that, and it is much better to have one on your team that will be with you awhile, than have to sign one every year like the Twins have the last few years. I would 100% keep him as a starter until he shows he can't be.
Barnes? No strong opinion there. Me? I'd probably include him in a deal of multiple players for a much better player (say, John Means, or his type).