It's quite a challenge to find that right mixture between what is realistic versus what is fun.
We have 55 Cancri in the game and it has the exopolanet that NASA discovered. Of course, we can only speculate what that planet is and we do have a red dwarf in that star system as well.
One of the more interesting things players will discover is that many (if not most) star systems actually have multiple stars in them. Our solar system is somewhat unusual in that respect.
My question to you is, how realistic does the game need to be for you to have fun?