As the Devs previously stated, there will be no separate components for two-handed weapons. Nor will be no two slots for components, as doing so would require reworking certain game systems, including the save format and Inventor logic.
However, the release of FoA introduced a system that could potentially resolve the issue of components for two-handed weapons: potion modifiers—or, more specifically, Potecy. Vials boost the effectiveness of not only potions, but modifiers; from the game engine’s perspective, these modifiers can function as either common modifier or secondary skills.
If a similar mechanic were added to items—specifically affecting components—it would allow the same components to operate at double (or otherwise multiplied) strength within two-handed weapons, or even enable the introduction of unique items that amplify component potency socketed in it.
