Apologies if this is not in the right place (so if a moderator wishes to move it to the right place, that would be appreciated), but I wanted to put some requests before the devs, to add more functionality to GM that has yet to be returned from Arma 3's Zeus

UI:
The ability to choose either Reforgers current GM UI, or the UI of Arma 3's Zeus.
A toggle for vehicles, that can have it where they are manned or not when placed (all relevent slots for full function, like a driver gunner and commander for a BTR, etc.).
A toggle for the time tool that will have a transition when setting the time, either like "Some Time Later...." or "*number* Days/Weeks/Months/Years Later".
The ability to set a post process effect, for those who want to have a different ambience .
The ability to select two groups, and use the context menu to combine them into one.

Functionality:
The ability to play music, either from the game or added by mods.
To create custom compositions in GM, rather than having to use Workbench to do so (both of objects and of units).
To edit the inventory of AI, to change their gear, and save those edited units as compositions for later usage.
To have those compositions be saved for usage not only in the current session, but for future sessions.
To have scripted compositions.
To be able to play animations on both AI and players, with the ability to toggle them repeating infinitely or once.
To disable Game Master Budgets (default on, and the game remembers that choice for future seesions until turned off or vice versa).
The ability to set faction relations.
The ability to Copy/Paste Units and Effects (Ctrl-C/Ctrl-V).
Being able to make it where manned vehicles can be placed, and when all selected and using the context menu, can use their positions to form a convoy, and they will roughly try to stay in those positions when moving AND/OR have a convoy module that can be set between two points, and the vehicles will spawn in, get to the end point, and despawn.
To set the speed of a vehicle/multiple vehicles, or make it where if you use the "Move Relaxed" waypoint, vehicles will move slowly.
A civilian module, that when placed down will populate a location with civilians and randomly placed cars on the sides of the road, and using another module you could have civilian traffic between zones, and have a toggle option where when players are far away the module is not active (can set the distance).

I know its a lot of functionality, but in the end this is functionality that we had (to a lesser or greater extent) in Arma 3's Zeus (either as standard or added by mods), and I hope to see this functionality returned for GM to have the power to create truly memorable experiences