I’ll take a shot.
Warrior and dual pistols would be interesting. I’m not sure how that would play out but it would most likely be another condition heavy spec. (Not a big warrior fan though.)
Necro – Acolyte
Weapon would be hammer and this specialization would be focused on shadow damage/monk-like damage for healing and group utility/buff abilities. Such as emphasis on conditions marking targets to grant healing to attackers as well as a percentage of all ticking condition damage split amongst allies within range.
Elementalist – Arcanist
Weapon would be dual wield swords and would be a melee based arcane specialization that focuses on intense single target damage with utility spells such as a precision and fury increasing field, and summonable arcane effigies such as orbs and crystals that explode for aoe damage.
Engineer – Golemnmancer
This specialization would implement not a new weapon, but an actual golemn suit that grants access to a wide range of unique abilities that can be altered to focus on movement enhancement, group utility, or purely damage and crowd control abilities. (But I would have to have a matching Iron Man themed golemn!)
Mesmer – Astromancer
This specialization would work similarly to the way Revenant legends work but would instead focus on specific constellations and astral entities each granting a specific skillset. (Possible constellation involving focus on longbows.)
Thief – Sniper
As suggested by others this would be focused on very long range stealthing assassination abilities and would allow the use of rifles, perhaps an elite skill that grants stealth and a scope mechanism that allows you to zoom in very long range on a player for high damage. Another base ability could be similar to dual pistols with an assault rifle style barrage ability.
Revenant – Legendary Titan Stance
A new specialization that uses greatswords and is a slow swinging high damage and moderate defensive specialization that grants return healing based on damage done. This specialization would also have a large amount of crowd control.
Ranger – Shaman
This specialization would grant access to dual daggers and be focused on shapeshifting into the form of your chosen beast. Also similar to the revenant legendary stances, this specialization would fulfill a wide variety of roles depending upon which animal totem you choose, whether it be a fierce Kodan capable of tanking intense mobs, Tengu stance that allows agile close encounter abilities, or Naga stance that allows for focus on ranged spell damage abilities that can be altered to damage foes or heal allies. (Forms can be substituted with actual beasts to make more sense.)
Guardian – Bard
This specialization would use focus and warhorn with emphasis on crowd control abilities, buffs and condition damage, and have spirits. By spirits, I mean this specialization could use musical abilities to resurrect temporary spirits that serve similarly to Mesmer clones and illusions and provide specific utilities or damage abilities.
