Got to play a fair bit of Darktide over the weekend.  Really enjoying it so far.  A lot of fun.
I do have a couple of minor complaints.  Why is it nurgle  again?  I mean there are 3 other chaos gods to choose from, Genestealer Cults and Tyranids.  The other factions are not necessarily known for city warfare but could still work.
there needs to be more maps.  I think there may be 5 or 6 at the moment.  The blackout mode does help as it is so easy to get lost at that point.  I also think there are a couple of reverse maps, but not 100% sure on that.  There needs to be a bit more variety as well. Most of the maps are Hive maps, with only 1 outdoor maps.  While understandable to a certain extent there is more variety they could add, such as the upper levels where the more affluent live, the corpse starch factories and so on.