Well im not so good to english so im skipping over alot of things:) The first thing should be the new building, the "forge" its shauld be available at level 7th and it would be a little like the lab. In the forge u can upgrade the armor/weapons ur troops have. like an upgrade to the barbarians sword, or helm. it should cost 700k gold to buy and the first upgrade should cost about 500k. at the level 7th u cant upgrade it. at level 8th u can upgrade it 2 times and at level 9th u should upgrade it 2 times again. when it got to level 5 u can upgrade the armor/weapons to the maximum there it should have an elemental bonus like the archer could get a 4 fire bonus damage on the bow which could have a bonus with 2 damage on wood defenses(archertower and air defense) and 2 damage decrased if it are a steal defense(mortar and cannon). then u upgrade armors to maximum it shauld have a resistance on a defense. the giants mantle could have a 20% resistance vs archertowers.
Then ur defenses is at maximum upgrade u could choose one out of 2 elemental upgrades. the wizard tower could have a fire upgrade where it got ekstra damage vs archers and a poison upgrade where the target that got hit lose 1 hitpoint every second after for 5 seconds.
The archertower could have a plasma upgrade where the shot could hit 2 troops a once if there stand a troop right behind the main troop. the shot would only damaga 20% on number 2 troop. the other upgrade could be a lightning upgrade where shot out a normal shot but then it hit there should come a little sap on the target so the damage done by the hitted troop shall be decrased by 10%.
The mortar could have a lightning upgrade so then the bomb(or what it is) hit the ground it explode like normal but where come 3 little lightnings who hit 3 random targets with a 5% of the mortars damage. the other one could be a frost upgrade so when the bomb hit the ground there come a 1x1 field with ice that will slow troops movement and attack speed by 30% while they stand on it.
The air defense could have a 10% splash damage to all nearby troops(dont know the name of this upgrade) or a ice upgrade so when the firework hit a little icicle will fall down and damage 20% of the airdefenses damage to ground troops.
The teslatower could have an upgrade where it got double damage vs golems, or an upgrade where it got a 50% more damage vs flying troops(dont have any idea what the name could be)
The cannon could have a tech upgrade where it shoots out 2 cannon balls that does 55% damage and if the target die bye the first one the second one switch to the closest target. The other upgrade should be the shock upgrade so then the shot hit the enemy the hitted troop will lose 10% movement/attack speed, damage and armor.
The x-bow should have a earth upgrade so every 3 shot will damage double. The other upgrade should be a protection upgrade so if a target that doesnt have being hitted by the x-bow come close enough so it can attack the xbow it will lose 30% armor and 50% attack
An elemental upgrade could cost 3.000.000 gold AND 3.000.000 elixir and the defense tower will need maximum level.
