New Troop request: The ghost bat

I think there should be a new troop in the dark barracks, which come as standard, alongside the minion. Here are the details:

Name: Ghost bat
Training cost: 10 dark elixir
Training time: 1 minute
Housing space: 1
Damage per second: 45
Hit points: 28
Movement speed: 40
Description: In a dark cave, a bat was filled with dark elixir, and has become a ghost bat. Invisible to archer towers, they use their fangs to rip the base apart. Just don't let the watchtower's men get in range of the little creatures.
Reference art: http://www.telegraph.co.uk/news/pict...ober-2008.html

In the reply, I will include details of the watchtower, and another bat-related troop.

This is basically a minion, except 10x better. They use half the space of a minion, have an insane 40 movement speed, and have around the same damage per second as a minion. Combined with balloons or barb/archer, you could ear through any base with ease. Way to overpowered in my opinion!

Name: the watchtower
Favourite target: Bats (damage x2)
Target type: Ground and air
Damage per second: 9 for the cannons, 11 for the flamethrowers
Hitpoints: 700
TH required: 7
Cost for original build: 500,000 gold
Description: The tall tower armed with flame throwers, and cannons shot by the veteran wizards and skeletons. These tall towers look over your base and keep enemies at bay.
Range: 14 tiles for the cannons, 9 for the flamethrowers
Damage type: Cannons - Single shot, Flamethrowers - Splash
Reference art: http://www.boomsbeat.com/articles/31...ional-park.htm

I think to compliment the ghost bat, their should be a more powerful, more experienced ghost bat leader. Here are the details. It is unlocked in the dark barracks, as soon as a ghost bat is upgraded to level 3.

Name: The ghost bat leader
Training cost: 100 dark elixir
Training time: 20 minutes
Housing space: 15
Hit points: 150
Movement speed: 40
Description: A swarm of bats is useless without a leader. This bat leads a swarm of bats, and gives them confidence to double their damage. However, it is easily attracted to the light of watch towers.
Reference art:

http://www.telegraph.co.uk/news/pict...ober-2008.html

The ghost bat leader attracts bats to it's path, but will attack watchtowers first, if it gets within 8 tiles of one. In defence, it summons the number of bats corresponding to the level it is at, to help them defend, and also doubles it's damage, i.e. at level 1, it will summon 1 bat, level 2, it will summon 2 bats, right up to level 5 where it will summon 5 bats, (the bats are the same level as the one's that the donators have.