No stupid Lockpicking minigame +1
Silent Protagonist +1
More than 4 dialogue options +1
No stupid "wheel dialogue" options +1
Better HUD, including companions HP bar +1
Skill checks in dialogue +1
Stats(?) dependent dialogue choices +1
Characters that have nice dialogue and show personality +1
Characters look much better than Fallout 4 plastic faces +1
Reward player for successful skill checks +1
Not using Creation Engine, but Unreal Engine 4 +1
Flaws system +1
Player can pick which Flaws to get +1
Nice real time quest updates and objectives HUD +1
Enemies do not seem to be Bullet Sponges +1
Enemy information window +1
You can lie/bluff +1
You can double cross factions +1
I haven't seen an animal die and drop a rocket launcher yet +1
Just from this short gameplay video I can tell it is 500 times more RPG than Fallout 4, it also has better HUD, better character's looks and dialogue and rewards the player for it's build.
I haven't seen any RPG where that was made properly and didn't make me cringe. Usually makes me play solo, games with romances, because they are so badly made and represented. I doubt Obsidian would be able to make a worthwhile romance in their games...
EDIT: Norzan already said pretty much what I think about Romances in games.