At this time it is better to extend players like Frelick, Mitchell, Wiemer, Turang, Chourio and others.
For Adames right now it makes more sense to go the free agent route. The amount of money being thrown around for free agents is just insane right now. I don't believe it would be prudent for the Brewers to sign Adames to a contract similar to Swanson. At a minimum I think Adames gets the Swanson deal and I just don't believe that would be a good idea for the Brewers.