@_Flux_ The point of subs in NGS is to be able to use sub weapons (especially through the multi weapon system), subclasses are not supposed to give access to everything, otherwise it would be alot more likely for certain class combos to be overpowered, in the end you just have to make a tradeoff (PSO2 didn't have main class skills at first, some skills ended being changed to main only because of certain classes combos being completely overpowered).
Let's say, someone plays as hunter and techter, you have to make a sacrifice with either option as main class. You either play HU/TE, don't get access to shifta, deband and the wide area healing, but still get access to the wand's melee abilities and techniques, or you play TE/HU, you lose access to war cry and iron will, but get TE's shifta/deband/wide area heal.
Same for any other NGS class combo.
Though, the beta only has a limited number of class skills available, I'm sure we'll see more skills options as NGS gets updates.