Necroposting, but since the OP never answered the questions I figured I might.
Kreador, adding fighting styles to the game could be done in a way that wouldn't take away any character options, and could add more customization to your character.
The way I imagine it, when you create your character you would choose your axiom, origin and class, and then a fighting style. Your fighting style represents the way you approach combat and the equipment you typically favor. You might have 'Dual Wielding', that lets you equip two one-handed weapons at once. Most of the time you attack normally, but you have, say, a 15% chance to make an extra attack with your 'off-hand' weapon. If you want, you can still use a two-handed weapon or a shield and be just as effective as you would normally be.
For people who don't want to bother with the fighting styles, there could be a 'generalist' option that just gives you a flat +1 damage with all weapons.