When will faction ABCDEFGHIJKLMNOPQRZWXYZ get added?
There are a lot of restrictions on number of factions due to the games UI. Some people are struggling to even be able to click on the box for the 6 factions that are campaign accessible.

When will legion/outfit ABCDEFGHIJKLMNOPQRZWXYZ get added?
It won't because of reason above. You can reskin any character models or vehicle textures and the game will allow you to play offline and online with someone who has not made those changes.

Why can't I play as [insert character type] with this faction?
Due to limitation of the game, each soldier type is limited to one skeleton and set of animations. The player has access to only one soldier type, while the ai can be spawned under several different solider types.

Why can't I play as [insert character type] with this faction, bug wars does it?
As the player the bug animations and skeletons are tied to the weapon and not all of the animations are accessible via a weapon. Not all bugs are accessible to the player, such as the skorpyon, because the difference in skeletons is large enough that players will obviously see the lack of animations.

Why is weapon/armor ABCDEFGHIJKLMNOPQRZWXYZ for space marines not like lore?
Lore is often propaganda and does not reflect actual quality of the equipment or weapons. This is 40k, where everything is overpowered and even the small wipe out the mighty because it was a good roll.

I don't like the font, how do I change it?
All mods are overwrites to vanilla files. All you need to do is delete the folder called "fonts" in the mod files.

Check out the official discord channel for modding help
https://discord.gg/runningwithrifles