How about adding walls into hives? Then the attacking clan needs to attack the wall before the players? It would change the style clans attack and can increase activity and socialising in the clan chat
That wouldn't work.. your idea means a player would need to use a PVP march to leave troops in a wall. This means that player would be unable to shield during that time. If the wall fell, anyone who left troops there would end up zeroed. It is better to just shield when asleep and hide troops with a shielded player when awake...