Now the following are a list of enhancement in each tier.
[TIER LEVEL]
[You may have 1 enhancement per each Tier of your weapon. For Example, at T5 you will have 1 enhancement from T5 and 1 from each tier lower.]
Tier 2
└Flexible Craftsmanship - Can take hits from multiple angles simultaneously without being cracked or damage.
└Solidifying - Can take hits from devil fruit regardless of power and still take no physical damage. Will still probably break if the attack is outrageously strong.
└Spring Attachment - Can extend the weapon 12 inches from the hilt by use of a spring made of iron. Projectiles fire harder.
└Coated Weapon - Can coat a weapon with a special water material that allows it to cause no friction upon contact with other objects.
Tier 3
└Hidden Attachment - Adds another weapon of a lesser quality of material to the hilt of the weapon such as a hidden switchblade.
└Solidifying X 2 - Can take hits from tier 2 Haki enhanced attacks without being destroyed.
└Spring Attachment X 2 - Can extend the blade 24 inches from the hilt by use of a spring made of steel.
└Material Enhancement- Can upgrade material from bronze to iron. Iron to steel, Steel to exotic, exotic to seastone, or seastone to black steel.
Tier 4
└Silent Weapon - All attacks from the weapon are completely silent.
└Bound Weapon - Can take hits from tier 3 Haki enhanced attacks without being damaged.
└Thieves Gem - Holding this weapon increases your speed and agility by 50 stat points each.
└Tacticians Gem-Holding this weapon increases your agility and stamina by 50 stat points each.
Tier 5
└Water Modification: All attacks from this weapon will extend a wave of water. Allows for custom techniques based around Water in conjunction with weapon usage.
└Fire Modification: All attacks from this weapon will extend a wave of fire. Allows for custom techniques based around Fire in conjunction with weapon usage.
└Earth Modification: All attacks from this weapon will extend a wave of rock. Allows for custom techniques based around Earth in conjunction with weapon usage.
└Wind Modification: All attacks from this weapon will extend a wave of wind. Allows for custom techniques based around Wind in conjunction with weapon usage.
└Lightning Modification: All attacks from this weapon will extend a wave of lightning. Allows for custom techniques based around Lightning in conjunction with weapon usage.
└Special Modification: [+1,000,000 in cost.] This allows a custom upgrade ability such as a stat gain of 100 for two specific stats or another elemental burst [Anything that is considered element via One Piece logic, meaning Paper is valid.] not listed above. Allows for custom techniques based around this ability in conjunction with weapon usage. Poison weapons are graded harder.
[COSTS]
Bronze Weapons
└From Tier 1 to Tier 2: 100,000
└From Tier 2 to Tier 3: 500,000
└From Tier 3 to Tier 4: 1,000,000
└From Tier 4 to Tier 5: 10,000,000
Iron Weapons
└Tier 1 to Tier 2: 250,000
└Tier 2 to Tier 3: 2,500,000
└Tier 3 to Tier 4: 5,000,000
└Tier 4 to Tier 5: 15,000,000
Steel Weapons
└Tier 1 to Tier 2 it's 500,000
└Tier 2 to Tier 3: 5,000,000
└Tier 3 to Tier 4: 15,000,000
└Tier 4 to Tier 5: 45,000,000
Exotic Weapons
└Tier 1 to Tier 2 it's 5,000,000
└Tier 2 to Tier 3 it's 20,00,000
└Tier 3 to Tier 4 it's 45,000,000
└Tier 4 to Tier 5 it's 75,000,000
Seastone Weapons
└From Tier 1 to Tier 2: 10,000,000
└Tier 2 to Tier 3: 50,000,000
└Tier 3 to Tier 4: 75,000,000
└Tier 4 to Tier 5: 100,000,000
Black Steel Weapons
└From Tier 1 to Tier 2: 50,000,000
└Tier 2 to Tier 3: 75,000,000
└Tier 3 to Tier 4: 100,000,000
└Tier 4 to Tier 5: 200,000,000
Sun Dec 15, 2013 5:23 am by 
Subject: Weapon Advancement