The FO didn't even get a setup to be evil.
Its evil because it guns down civilians, and its motivation is to find Luke for some reason. Thats about it. Then some guy by the end of the film says 'We are here to reverse the collapse of the empire'. The resistance is resisting them because the FO is evil.
Il give JJ all the crap in the multiverse, but he did setup the very basics of basics of basics.
Now the setup is ricepaper thin. And its much more hollow because its relying on already WELL tread tropes to do the same stuff again.
The OT relies on very basic but understandable terms: 'The Empire'. Thats a basic thing with allot of resources.
'The Rebellion'. A thing from within the empire. Either subjegated or internal schism.
Then more basics about the dissolution of a senate are established quickly and we can lean more on 'Internally collapsed democracy', instead of 'Empire by conquest'. Bam, basics established.
The ST relies on similarities to past stuff and visual aids without having any of the answers. Thats where the real hollowness comes from.
'The First Order'. What does that actually mean? Order of Knights? Order of what? How does just an order build planet sized doomstuffs? Do orders just have the power in this universe?
'The Resistance'. To TFO occupied space? Then why are they not in TFO occupied space and some other planet?
And thats giving TFA the benefit of the doubt as a standalone product. You will start immediatly start asking more questions if you do.