i watched the gamescon video again, and studies the skills yoshi was using. it seems pretty much every weapon skill only has GCD, so you can spam leg sweep, chaos thrust, dragonfire dive every 3-4 seconds...
Ofc that's several months ago, so we'll see ^^
it's pretty crazy if you can constantly do combos...well aside from not being able to build TP quickly. so it would be kinda burst damage.
I think you'll cycle most skills really. you'll do different combos in different circumstances. And the combos are different anyways. in 1.0 you had vorpal thrust->impulse raid. this is not a combo any longer. instead it's true thrust->vorpal/heavy thrust. In most cases you'll use vorpal, cause heavy cost more TP, but adds heavy if you wanna kite/flee.
We'll see what other combos there are. But i hope there's reason to use all combos/skills. Impulse seems like generic spam skill in party though, with low cost, and high damage; but problematic solo, cause you need to be behind target for max damage...
But anyways it depends on circumstance. If you fighting few mobs, there's no reason to cyclone. might be better combos for higher damage vs single target, or lower tp cost.
(this is info you can see in alpha party video)

I noticed Drachen gear had new stats also.
gloves +45 atk, +30 enmity! suppose it makes sense to add enmity since it adds lots of atk
boots +20str, +40 enmity, some powerful kicks right there.