ideas for trap, defence and other ideas

Traps:
Dog house: a dog house that summons 2 lava pups that attack both land and air
Pungji stakes: a trap that damages and poisons enemy troops air troops immune to it Reuseable throughout the battle then after the battle must be rearmed
Defence:
Trebuchet: its attack radius works like the air sweeper but cannot attack thing right on top of it like the mortar also it does splash damage and cannot attack air based troops
AA Cannon: works like the air sweeper but only deals damage also a single target defense.
Spitting cobra: a tower that works like a mix of the hidden Tesla and inferno tower
It hides until something triggers it and shoots a spray of poison that damages the enemy then deals damage over time can be set to single target for more damage or splash damage for more target but less damage can run out of energy and is recharged through using poison spells.
Others:
No man gets left behind: Can you make it so we can keep troops that live its impossible to tell how many we need and it wastes resources
We built this city: town hall 11 - 14
Are you home: have something to tell us who's online in our clans I hate the chat guessing game could have it on clan screen
Spell donation: allow clan castles to also hold at least 1 regular spell for use from ally or 2 dark elixer spells which are drop desperately from troops.
Did somebody say hog rider: increase clan castle lvl to hold more troops.