Weapon Proficiency & Specialisation

Weapon Proficiency & Specialisation
Characters start with and gain weapon proficiencies as per standard D&D.
Instead of gaining proficiency in a new weapon, a character may decide instead to specialise, gaining bonuses with a chosen weapon. Only 1 level of specialisation in a particular weapon may be selected for first level characters.
In addition, Fighters, Rangers and Palladins can opt to take one additional level of specialisation at setup, by taking disadvantage (-2 to hit, -2 damage) in a weapons class.
Weapon classes are:
Swords/Axes
Maces/Hammers
Polearms/Staves
Missile
Benefits Of Specialisation
For each level of specialisation, the character may choose one of the following:
+1 to hit, +1 damage
+0.5 attacks/round (cannot choose	this option twice in a row)
Example:
A fighter designed to be a specialist swordsman.
At start: 4 Proficiencies
Takes:
Longsword
Broadsword
Longsword Specialisation (+1/+1)
Broadsword Specialisation (+1/+1)
Disadvantage Missile Weapons
Longsword Specialisation (+0.5 attacks per round)
At fourthWas originally incorrectly stated as 'third' level level the fighter then takes an additional specialisation, this cannot be +0.5 attacks/round since that was chosen at 1st level, so instead he improves Longsword to +2/+2.