That's not massive success by any means.
Hitting the third spot for half a day before falling off the top ten...isn't something the dev's will proudly announce to anyone.
As with all larian games so far the game was shot out of the proverbial cannon all it's features half baked and If I were to guess more cut content then content.
Maybe in two years they'll release the developers cut. But don't hold your breath for any meaningful dlc.
