Yeah, not to worry there is a ton of content in Ultimate. It was just a mention to anyone who hasn't purchased it yet. They both go on sale at the same time so, it's easy not to know.
As I said the most important part is to be focused at first. Pick melee or ranged, then just level till you max those out 8 abilities and you will be way ahead of the game. When it comes to passives you can use any passive, even if it's not from your 2 chosen starting weapons. I chose Assault Rifle and Elemental, so I focused on ranged and crowd control. Imo, Assault Rifle is the best range and if I had to pick melee (which I've never used) it would be Claws or Blade. You have the ability to damage and heal with most weapons, but I'm not sure all.