Even tho i dont agree with you because no a mage would not grapple or throw enemies.
I was referring specifically to the alchemist.
But I'll address the unarmed combatant:
Grapples could be interesting, and it'd be nice to have more non-mage abilities. But the problem with building this into an "unarmed combatant" is that it's restrictive instead of additive. When you build a warrior with a weapon, you can't just start investing points in unarmed in the same way as a fire mage can invest points in water magic.
In D:OS, Larian have done a much better job of creating cohesion between the magic skill groups. As a mage, you might cast an earth spell to lay down some oil and then immediately follow-up with a fire spell to set it all on fire. How awesome is that?
But a warrior/rogue? You could get bow skills but you'll need to equip a bow. You could get melee skills but you need to use a melee weapon. If we'd voted differently, we could have gotten unarmed skills, but then you'd need to ditch your weapon entirely. All of these skill groups basically mandate that once you pick your skill group you have little room left for any creativity. The closest I ever got to this was by combining Bull Rush with Bully to deal some bonus damage, but it was hard to pull off.
For the record, my first vote actually went to the Juggernaut because it could potentially open up some skills that could be
added to the other martial skills, instead of just creating a new niche.
