No word on long term progression system

The roadmap includes new battle passes, but there is no mention of the long-term “Spartan Career” progression system that they have claimed to be working on. What is happening with this?
They’re adding a bunch of content which in theory would breathe some new life into this game. If they want players to stick around, wouldn’t it be smart to also have a proper progression system, outside of the battle passes that only take a couple weeks to complete?
How hard can it be to just set up a series of ranks, with appropriate amounts of XP between them, and maybe slap different titles and icons on each one?