I don't think they are small. Impact can create sprawling race tracks, and Ravine can create good BTB maps. Erosion is obviously more suited for smaller maps. Halo multiplayer vehicles were never really meant to go from point A to point B because it's impractical to go on foot (we even have sprint by default now.) They are either used to do damage, run objectives, or quickly join/escape a battle. We will most likely get more "classic" forge environments through DLC, so people who want a ridicously big map (Forge World) that they dont use 50-95% of when they make their maps, it'll be there hopefully to silence the whiners. I for one am very pleased with this variety we are getting, and people who complain about there not being enough flat ground, you have 50 collosieum walls to use, that's more than enough. I can't wait to forge on these.