Joystick is also retarded because the only things that carry over from Civ 5 are the graphics, the 1upt system and some UI elements
Affinities and the tech web as well as you being able to choose the starting boni give you much more customization options than what was possible in Civ 5 or any other Civ game before that
then theres satellites with which you can influence the landscape around you ie removing or spawning Miasma, giving boni to tiles or even spawning resources with a low %
espionage is closer to Civ 4, you can choose missions for your agents to steal energy (=money), steal tech beakers, incite a revolution or even setup a dirty bomb
Affinities are a bit like ideologies but you aren't locked into them, you can grab boni from other Affinities if you like
and then you have random missions with rewards that will either push you further into one affinity or unlock some new stuff for already researched/build units and structures, ie the Ultrasonic Fence unlocks a choice between increasing the fences radius of effect or give your trade units basically immunity to the aliens
there are some negatives such as wonders being less effective than in other Civ games, the AI is still dumb when it comes to naval battles (they only upgraded the AI for land and air battles it seems) and diplomacy feels a bit lacking
MP is there but without mods
if youre unsure if you like this one or not check out streamers when they start up, especially
Maddjinis good at breaking any kind of Civ game over his knees while explaining very well what and why he is doing it in a particular way