How forge can be improved:
From a general non-forger standpoint, Forge needs to be more accessible to players. There need to be more options to make Forge easier to use, and easier to understand. There is a simple premise: "Create, Place, Play" However, anyone who has actually tried to do this in Forge has found that placing two walls next to each other, or on top of each other is a little more than hair-rippingly frustrating. By adding little features such as instant-angle snapping, and making adjustments (such as picking up an item does not instantly readjust its position, so making minor tweaks to items aren't difficult) players who don't have the patiences as long-time Forgers, will be able to create excellent maps they can share with their friends.
As a long-time user of Forge and a member of Forgehub, a great Forge community, I know that there are nearly a limitless amount of things that Forgers desire to be added into Forge.
First, the item quota limit in Forge. I still don't understand why I am limited to only 8 walls, or 24 double boxes. Some may say that this limitation leads to creativity, and perhaps in some ways it does. But in most circumstances I feel it leads to frustration, and limits the possibilities. Instead of planning your map around your ideas, you plan your map around how many of what item you have left.
Secondly, there are a ton of new items that Forgers would like to see, and I could try to name them all, but it'd be much too long. But I'll try to list a few main types:
Invisible Walls and 'death pit' areas. These would allow Forgers to easily limit the size of their play area and save a lot of budget and pieces.
Manipulatable items such as doors. Often I see many maps that use very clever ideas to create doors on maps, so why not make our life easy and give us one.
Destructible items a la Pallets. This would function similarly to manipulatable items but would be useful in covering hidden passages, or making a rickety destructible bridge, for example.
Finally, there are options that could be added that would also vastly increase the diversity of Forge Maps seen. Options such as:
Movable/immovable option - the ability to select whether an object can be moved, floated etc.
Destructible/indestructible: for those items that can be destroyed, such as pallets, concrete barriers, etc
Easier interlocking. Interlocking is a forging term in which two immovable objects such as walls are merged together. Normally this involves setting one object to a delayed respawn, setting a new round, and then placing the second object where the original was, before it respawns. By making this easier for Forgers, we could not only save time, but actually see how the interlocking looks, so that we don't have to waste countless hours restarting rounds just to get our two walls to interlock just right.
Tweak the item respawn system. Right now, some items just don't work well with the respawn system such as Crates. And give us the option to let items never disappear.