I have mine all mixed. All the 25th and newer as the core, then vintage figures to fill in who they haven't made yet. Also a few of the VvV and GvC lines. (Approx 900 figures in my dio - 85% modern, 10% vintage, 5% from the early 00 lines) Vehicles from all eras mixed in. From my custom-painted 83 GIJoe HQ to the mobile command center to all the modern Awe Strikers.
Photos are from a few months ago... many more figures out now