Has 2k ever added someone in(as DLC) after the game has finished development ?
They do it all the time
WWE 2K23 DLC List: All Characters Packs and Release Dates
On this page you can find a complete breakdown of all the WWE 2K23 DLC Packs announced for the game. WWE 2K23 will have 5 post-launch content packs featuring...www.thesmackdownhotel.com
For example; Trick Williams & Tiffany Stratton was added months later
CM Punk 100% will be in the game the minute they get him in a session to take his pictures