No idea why you feel that the author should deliver a conclusion asap. Maybe you are tired of the gameplay loop and that's fine, but that's just your opinion. It's not like we have reached Bleach or One Piece levels of filler. I don't even feel there's any actual filler other than the small joke arcs like the Duo of Mischief.
From the very start, the hotel was full of empty rooms, which have been slowly become populated. Author has also been improving his skills along the way. On top of that, Hachi is one of the few developers around these lands that consistently deliver updates where things progress, instead of just small bugfixes or changes to put a facade of being working in the project while milking supporters.
Perhaps you liked the story so much that you can't wait for the resolution?