Balance Clan War and Reduce Espionage

I have a few suggestions for game improvement.

1. Balance Clan War matchmaking.
We have been matched against clans 2 levels higher than us. Makes fighting impossible or at least harder.

2. More immersive Clan chat
The chat UI seems bland and uninteractive, and once a message has been typed you cant edit it, you have to retype the whole message again if you made a mistake.Make messages deletable and editable.

3. Clan joining and leaving
Have a short cooldown to join clans again when you left a previous one. Makes it harder for Clan war spies to go back to war when they've entered an enemy clan.

More power to the Clash of Clans Dev team!

Welcome to the forum dead inside.
Let's come straight to the point.

1. Not even worth saying when my clan was level 2 we won against lvl 9 clan. Lvl of clan does not make war tough. Lvl of player does.

2. You should read stikies before posting.. This idea is submitted already and currently under consideration.

3. Agree partially, should make it tough for spies, but not by clan joining cool down. I have 3 clans. Most of us normally have friendly clans which we normally visit. So clan joining time cool down is not a solution.

I get suspicious when we have any talk of 'balancing clan wars' surely we want better clans to do better and worse clans to be forced to adapt - which is why the recent addition of the winning streak as a weighting is a move in the wrong direction. Anyway, to your specific points:

1) Totally disagree with you. All the higher level clans have had to climb the ladder and you do too if you want those advantages. To only match high levels against high levels means there is no point being a high level, you would get no comparative advantage.
2) Sounds like a good idea.
3) I think this would have many problems as previously listed. Also, spying isn't all bad, its actually quite fun, happens in real wars, and is easily preventable anyway. There are ways to get over it.

Number 3 would ruin clan hopping, so no way.