Equipable Walls, NEW Multiplayer Campaign, NEW Spell and a Online Indicator.
First, Equipable walls like Sending some of our Own Archers to Stay on walls and Defend our base during a raid. They would just fall off after the walls get destroyed while losing 20% of their hp etc.
Second, New Multiplayer Campaigm and the ability to Request One (or Many) Clan member to assist us in Multi-Player Campaigns. Co-op Raids like this would be so fun to do with a Clan member! They should all be able deploy Their Troops together in a Live battle (just like how we watch a Live Battle in War) to make use of the remaining time they have before their Shield Runs out.
Third, Invisibility spell. Upon usage, All troops become invisible for a limited amount of time. Invisibility is broken when a Unit attacks. Troops can become invisible again if they don't attack and if the spell duration is still active.
Or
Smoke Spell. Upon usage, it Creates a Thick smoke in a targeted area. Troops deployed in the smoke only have their HP bar shown. Defending towers will attack straight at the troops deployed in the smoke normally but if the defender's building is between the Attacker and the defender, it will first hit the building instead of the attacker unless the attacker moves or the building is destroyed. There will also be a chance to miss. Mortars will damage anything in that smoke, Friend or Foe.
Lastly, a Online Indicator. I think this may have been requested alot of times but I'll say it again. We need The ability to see who is Online/Offline in our Clan, their Last Online log etc to kick the inactive Clan mates. It will help us in our chat+war too. (Reference - Facebook Active Friends )