In a way I was being flippant. To shrink this map you would have to create a complete new terrain that you have mapped out all the bases excluding the the parts you want to leave out. It would be a full time terrain building effort because it would be a completely new terrain copying a modified layout from the Fester terrain.
When you gents wish for some map to be modified in this matter unless it's something like adding shore batteries or moving a base slightly. You are really asking HTC to build a new map which they won't. You will have to use the existing map as your guide, fire up the terrain editor and make a totally new terrain.
No one has every wondered why with all the wishes to shrink or change some large feature over the years HTC has never modified a terrain??
Lunatic, the new terrain editor is pretty simple......