Source: this forum thread
MrConway (EU Community Coordinator) recently posted how WG regards „boosting” or using the map’s terrain to your advantage in unexpected ways:
„Let me clarify some things: As long as you can get to a spot in game using the regular game mechanics, you are not breaking any rules by going there, although it often will not help you win the battle.
Some of the spots are intentionally placed, others are the result of the physics update and the changed tank behaviour. We are aware of the situation and will likely be removing several of the spots that we find problematic. As you know we are currently completely reworking all maps into HD, so you can expect some of the boost spots to disappear with their introduction.”