Hey!
The servers you can see going up are part of us testing server files with a couple of community members. They chose to host Battle mode (which they are allowed to), but it's still very much work in progress.
There will be a couple of updates to Battle Mode with 1.7.2. With adjustments to all the 3 maps it comes with, flag timings, gold gain system and also special troop costs just for Battle Mode. The class system will 100% stay for Battle mode though.
So please keep that in mind. And have fun testing