I was struggling to come up with ideas for bases on my BTB map. I knew I wanted vehicles to be able to travel underneath with ease, but at the same time I didn't want to make it awful for infantry. The other thing was keeping with the CE Forerunner aesthetic. I decided to just experiment around on Alpine, just so I didn't accidentally delete something off my map. I started off by making the outline of a Blood Gulch base. This ended up being 34 pieces.
My end goal was more Coagulation than Blood Gulch, so I grouped that together and duplicated it. Flipped it so it was upside down and essentially one giant shell. I then raised it quite a ways off the ground and added stilts to it. Then I threw in some stairs(and removed some walls while I was at it). I should have taken more in-progress shots, but I didn't think of it.
Here's what the final version looks like. I think I can probably cut a handful of pieces, but it's going to be a pretty small number.
Overview of the base. Warthog for scale.
Lower floor inside the base. I kept the hole so that players could ground pound vehicles passing below. The two grav lifts lead to the next floor. The slope on the wall is 45 degrees, so players can also run up can clamber to the next level if they want.
Left and right views of the 2nd level of the base. The grav lift behind the pistol leads to the top of the base. Players can also use the trapezoids to jump to the top also. I had the bottom trapezoid, but for some reason it would only let me clamber on one side. The opening to the outside goes to a man cannon.
The roof of the base. Not much here yet.