Jones being young is exactly why you don't trade him. You're selling your future when you don't need to.
Same goes for Thuney, imho. He's a better fit at Center long term than Andrews. Especially if we are going to a ground centric offense.
I agree on Jones...except that he's going to get very expensive very soon. They will have two very high level CBs in Jackson and Jones, but I don't know that they will pay them both big money. Of course I'm assuming Gilmore is gone as well. If they have money for both Jackson and Jones, sure, keep them both. I don't know that they can do it.
And Andrews is better at C than Thuney, though Thuney is a great offense lineman.