so i doubt that we'll get a command station built into an APC's passenger area anytime soon.
Puma is actually doing it somewhat as a IFV - differently of course. The vehicle includes situational awareness systems (SAS) and software that assist in pinpointing enemy positions, movement and gunfire to plan an optimal infantry egress and the required suppressing or diverting fire (or fire orders) from the vehicle, and that can technically also include information from offboard sources such as UAVs. As in 360-degree sensor systems and software that analyzes generated data to highlight e.g. enemy movement within line of sight.
The main console for this is also located such that four out of six of the soldiers in the back can view it - in addition to the gunner and the squad leader who can both access it. There were originally plans for a second monitor in the back, hardware-wise the system supports piping video feeds on a bus to any position throughout the vehicle.
The squad leader usually stays on the vehicle to monitor and support, but still has the option of shipping out with the others. If he ships out the gunner takes command of the vehicle, if he doesn't the infantry runs under his deputy as troop leader. This was already done the same way with Marder IFVs the past 30 years.
For squad leader (right) and gunner (left) it looks like
this (warning: huge picture); the central monitor is for the SAS system and can be viewed by the infantry behind them.
The SAS system is being continually upgraded, and it's interestingly not that easy to find
recent (less than 10yo prototype) pictures of the interior of a Puma. Above pictures are from KMW's SIAM combat simulator system using Pumas. Most recent upgrade to the SAS system - ordered a few months ago - was to include 360-degree thermal imaging.
One possible development apparently in the works at KMW is to add a full 3D environment in which the vehicle and detected own and enemy vehicles (... and other positions) are displayed along with marking out fields of fire in this 3D environment for both vehicle and other weapon systems. This would explicitly include offboard data sources to visualize positions that the vehicle has no line of sight to.