It's not really FPS-y, you are in first person in a roosterpit but the ships dont allow you to track targets as well as you can in something like cod.
The only real RPG aspects are upgrading and buying new ships and the new-ish powerplay faction rank stuff that i dont know much about
It's closer to FTL than Civ5 in terms of strategy since yo uhave to balance power and heat and modules and all that
The only time you'd have to worry about crashing is when docking at a station
It's extremely large and openworld except there isnt much in it considering you're in empty space most of the time.
It can be boring depending on what you're doing. Trading drives me to insanity if I do it for too long but unfortunately its the fastest way to make money. Combat and other stuff are still viable options too though.
How combat goes depends on your loadout, there's fixed, gimballed, and turreted weapons that all change how you have to aim.
Frontier has promised a lot with it, however when the stuff like planetary exploration, being able to exit your ship, and having multiple players crewing a ship is gonna come is a mystery as far as I'm concerned. With the current state of the game there's a decent chance you'll lose interest before any of that arrives, but there's a chance im wrong. Player interaction is generally what kept me playing, cruising along with other players and hunting down pirates is fairly engaging.
tl;dr dont expect constant action and infinite content, or a consistently positive experience. It's definitely a fun game from my perspective but I haven't touched it in over a month as I found myself getting bored with constant grinding. If you're willing to be patient then it could become something incredible, as of right now its only fairly neat in my own opinion. The graphics are really good though.