Bustr you're on the right track. Changing elevations to maximize a tank's design effectiveness, different terrain features for tanks to fight over, lines of sight that maximize the use of a tank's gun barrel/range/punch, areas to maneuver in, cover to leap-frog to and from, these are all things that make tanking fun. Stay the course, keep making these changes. They are far, far better than heavily-treed, table-top flat terrains we started AH3 with (no knock on anyone who converted an AH2 map). And you're right: 1) Hitech's job is keeping the game engine running, 2) terrains can be built by anyone who wants to spend the time, and 3) if folks want something different, terrain making isn't rocket science.
I would add, at least for me personally, that if anyone wants to see something specific, let me know and I'll see what I can do. I'm on the AvA staff, and we're going to roll out some berms, land objects, and GV-heavy features in an AvA terrain for folks to drive around in and critique, make suggestions, etc. Hopefully by the end of January we'll have a Tank Night where we can see some of things we're working on.
Also, for others interested, there's a way to really get down and dirty and play with the terrain set features and get some really cool ideas, without affecting FR. The terrain sets are laid down in 4 mile seamless textures. You can lay down each texture, take a screen shot from the Terrain Editor, and print out a 4x4 mile square block of texture. Then you can do what I do and mark out where hills and plateaus can go, where berms might go, where anything you think might make the game fun, you can mark it up. Take advantage of the built-in textures. If you're not comfortable with using the TE, one of us can take suggestions and try it out. Send me a PM with a suggestion, and maybe I can post a screenshot of the idea. This is my hobby now, and I find it quite fun.
And Bustr is right, Hitech and Waffle and the guys are very helpful in incubating ideas, and freely sharing technical ideas on object and map creation, textures, game performance, etc. The lads at HTC want folks to have fun. But, they rely to a large degree on the community to come up with the terrains to play in.