Firstly, like others are saying here, great game so far! Just got off after playing it for the first time, played for around 5hrs. Will definitely boot it back up tomorrow!
I'll jump straight to my point: Do people think that having some sort of ranking/leveling/character progression system would continue to give the game more replayability( < if thats even a word). Imagine everytime you kill someone you gain some bonus xp, everytime you extract successfully you gain some bonus xp etc. As you go up levels you could potentially unlock rare cosmetics (im sure someone more creative than myself could think of some better rewards). Therefor, your house is leveling up and looking badass.....and so are you!
On a side note, definitely agree duo/squad is a must, map rotation/variation is a must. If the house becomes customisable, being able to invite friends in would be cool. Maybe they could then 1v1 as target practice, obviously without dying. Or you could show of your pvp stats on the chalk board you put up outside your door =-)
If you made it this far, thanks for reading, would love to hear everyones thoughts on these opinions and ideas.
tl:dr - Maybe a ranking/leveling system would add to the rellayability what do you think?