The gameplay is literally the same thing, except attachments are ****ed up. Idk how you feel they made the mechanics better as it's all still the same. Take cover here, oh you want out of cover? Oh no we're gonna make your character move to the next obstacle. Yup you're now dead. And who thought it would be a good idea to make the vault default key control? Sheesh. Grenade throwing should be one button, not select and toss. It's wasted time when facing enemies that can one shot you. In fact a mechanic they could have made better is hit button to toss grenade normally, hold and release for aim mode. Just toss the selection completely.
I was playing with dudes level 30+ and doing tier 2 and 3. They all say the same thing.