So I do not agree with replacing WS for Finesse for the Storm Trooper. Why you ask? My, only because we already got a shooting specialty, called the Weapon Specialist.
So I checked my book out, and wrote down every characteristics, skill and Talents both the Weap. Spec and the ST (new and old) has with 2 Aptitudes (therefore, cheapest buys)
Weapon Specialist (2/3/30)
Ballistic Skill, Agility
Acrobatics, Operate, Stealth
Ambidextrous, Catfall, Deadeye Shot, Leap Up, Lightning Reflexes, Quick Draw, Rapid Reload, Weapon Training, Crack Shot, Crippling Strike, Hip Shooting, Hotshot Pilot, Independent Targeting, Marksman, Precise Blow, Rapid Reaction, Sharpshooter, Swift Attack, 2xTwo-weapon Wielder (Both of them), Whirlwind of death, Arms Master, Assassin Strike, Blademaster, Blade Dancer, Gunslinger, Lightning Attack, Sidearm, Sprint, Target Selection.
Old Storm trooper (1/3/22)
Weapon Skill
Acrobatics, Operate, Stealth
Ambidextrous, Catfall, Double Team, Leap Up, Lightning Reflexes, Rapid Reload, Street Fighting, Takedown, Furious Assault, Hotshot Pilot, Killing Strike, Rapid Reaction, Storm of Iron, Arms Master, Assassin Strike, Crushing Blow, Eye of Vengeance, Lasgun Barrage, Mighty Shot, Preternatural Speed, Sidearm, Sprint.
New Storm trooper (2/3/25)
Ballistic skill, Agility
Acrobatics, Operate, Stealth
Catfall, Deadeye shot, Double Team, Leap Up, Lightning Reflexes, Quick Draw, Rapid Reload, Weapon Training, Crack Shot, Crippling Strike, Hip Shooting, Hotshot Pilot, Independent Targeting, Marksman, Rapid Reaction, Sharpshooter, Storm of Iron, Two Weapon wielder (Ballistic only), Eye of Vengeance, Gunslinger, Lasgun barrage, Mighty Shot, Preternatural Speed, Sprint, Target Selection,
Ok, block o' words here, now to list what the Old ST and the Weapon Spec had in common..
Ambidextrous, Catfall, Leap Up, Lightning Reflexes, Rapid Reload, Hotshot Pilot, Rapid Reaction, Arms Master, Assassin Strike, Sidearm, Sprint.
11 Talents are similar (costing the least), leaving at least that amount as 'niche' ST talents.
Now, for the Weapon Spec against the New Storm Trooper.
Catfall, Deadeye shot, Lead Up, Lightning Reflexes, Quick Draw, Rapid Reload, Weapon Training, Crack Shot, Crippling Strike, Hip Shooting, Hotshot Pilot, Independent Targeting, Marksman, Rapid Reaction, Sharpshooter, Two Weapon wielder (Ballistic only), Gunslinger, Sprint, Target Selection.
19 Talents are similar, leaving the ST with 6 'unique' Talents…..talents that are there because of the Offense Aptitude.
Switching to Finesse compared to WS does make a well shootier Storm Trooper, but due to good quality superior gear and weapons, he will simply overshadow the Weapon specialist. Elite troops used to spearhead assaults and strike behind enemy lines should be more able to both at ranged and up close and personal, being a good opponent without being a combat monster in either.
I believe the previous ST, with the WS Aptitude, showed that well, being able to hold out on its own at ranged (without pushing the Weap. Spec on the sideline) and can be solid in melee as well (without eclipsing the Ogryn) The Perfect Jack-of-all Trades. So I ask, bring back WS instead of finesse.
I would also point out that the Storm trooper has 6 aptitudes, compared to the other support Specialist that have 7 (or 8 for the Tech-Priest). The Psyker got 6 as well, i figured he had a sheltered upbringing being trained on Terra; the Ogreyn is simply, dumb. Adding another Aptitude would make him on the level as the Commissar, (who is also Scola Trained). Perhaps Adding finesse (or knowledge, as it is half the battle, and Storm troopers aren't no die-by-the-boatload guardsmen) to thier aptitude list might help them making them more an of elite support choice, without making them scab another specialist's role.