Agreed, the halo 3 forge was amazing and was easy to use compared to the Halo 4 version. I still have trouble going around the menu and there are a lot of things you cannot change, seems as though we had more freedom in Halo 3.
The over all appearance is better and more realistic. You can now see shadows where you place objects not to mention that you can select them with a lot more ease. I had a lot of trouble in Halo 3 when creating a map with multiple objects that were close range. I would always end up picking up the wrong object and had to replace everything with an extremely sensitive crosshair. Things look a lot more stable in Halo 4 which is proof they are on the right path.
I have to agree. Perhaps Forge wasn't focused on quite as much, and they just wanted to throw in a passable Forge, which is exactly what we got. It's up to the Halo community to make sure 343 knows they should make an awesome Forge mode in Halo 5, and a better file sharing system wouldn't hurt.