I think it is an significant change, and it's one I've been asking about and writing about since this time last year when they made the move for Ozuna and really put on an egg-timer on this current group to produce. I find it fascinating how they've set up a situation with so many free agents coming out of 2019. That means they can do a few things, depending on the results of the season:
-- If all goes well, they can try to keep the group together, or pick and choose who stays.
-- If all goes poorly, they scrap the group, move away from it, some harm, no foul.
Either way they're positioned then to go into the free-agent market a year from now and have some sort of bid for a Nolan Arenado or Anthony Rendon, if either reaches the open market. The Cardinals can try to keep Goldschmidt and have that be the corner infielders, and either do something else with Matt Carpenter, put him in left field, or, yes, thank him and let him become a free agent. Same with Ozuna. Same with Wacha. You get the idea.