Clan vault or clan resource pool
I don't know if this has been suggested before but I have a idea for one. Every clan could have a vault to contribute to and pull from.
I have a layout of it like this. Just a rough layout can always be improved this is just a way I picture it.
Leader and co-leaders manages vault.
Anyone can draw from vault but have a daily limit set by leaders.
Can increase amount for elder status.
starting out at like 5k up to 10k total resources
A way to prevent overabuse of it is if you didn't contribute that day you can't draw from it.
Contributions can be auto from raiding.
If you raid and get resources you can have a small portion be put into it like .01%
Ex. You raid a base and get 100k gold and 100k elixir.
.01 of that is 1k gold and 1k elixir to be put into vault.
Doesnt seem like much but when you have some players raiding all day it adds up.
Rates can also be increased for status of elders and leaders so they give more. Since they can take more too.
It helps everyone if you just need a few more resources for upgrades. This way everyone contributes and those that are higher levels can help your clan mates grow.