You played the "Challenge 2" of the first campaign. I just tested it and it is working (maybe an old bug I already fixed).
About the mountains, it was a design decision to make it block all land units (in earlier versions infantry could move on it just like in AW).
Forest slowing down units - implemented.
Buildings do give good defense bonus to units, it just isn't shown when hovering the mouse over it... something to consider, thanks for pointing.
Game not ending due an stealth AI unit: possible, it happened to me once. It's easy to check by using cheat codes (currently only my special dev build allows cheats). You can reveal an enemy stealth unit by moving an unit over it.
Yes, in C&C games the radar is necessary to show the minimap. I consider this an obsolete game mechanic. I once thought about a radar sweep ability, but it was scraped and ended being just a tech building.
1)No problem, but any particular reason?
2)Implemented. Just hover the mouse over the button for a few momments.
3)Implemented.
4)Implemented. There is Easy, Medium, Hard and Cheater difficulty levels for skirmish games (AI at campaign mode always behaves at Hard difficulty).
5)A delete button is now available at the load game menu.
6)Initially it was planned to implement different movement types for vehicles like in AW, but the idea was scraped. Further changes that alter the game mechanics would break most of the existing maps.
7)The building isn't damaged until the unit above it is destroyed. The only exception is for units that causes splash damage (the center tile takes a fraction of the damage just like the 4 tiles around surrounding it).
8)Will consider. The only inconvenience is that "A" coincides with the shortcut for (A)ttack.
10)I understand your point, but such large scale changes are kind of impracticable at this point as I'm planning the launch date (this game have been in development for more than 4 years). Of course, nothing prevents me from adding more features on future.
Thanks again.