Many have said it already, but i too like the creativity, and the fact that mapmaking and presetmaking is easier than what it was in Impressive title. I never learned to make maps in that game, or presets.. tho all i had was paint (photoshop etc confuse me xD), but in this game i have managed to make maps, and even presets with paint
that's what i like about Fh too, you can make presets with paint(correct me if im wrong btw, but i think you needed some other art program for making presets in Impressive title?).
I also like the freedom and the fact that there is absolutely no goals or objectives, if i don't feel like doing anything, i can just go sit somewhere and watch the sun to set/rise.
There is no grinding, no levelling no obsessing over gear and stuff like that.
Character customisation is also really good with all the options to chance the widh and height and, well you know :3, it's good.
I also love all the emotes
, and the movie tool is awesome, even tho atm it doesnt save the movies.