I have played for a few hours yesterday and stopped after zombies started spawning 5ft away or in my face.
I recommend similar to Project Zomboid to mark set areas of the map as sectors and regulate the spawning of zombies as having zombies spawn in the player area after they just clear it can be demotivating or even just immersion breaking. (edit: BTW these sectors do not need to be seen by the player this can be background dev knowledge just useful to use it to regulate spawns)
What I mean in detail is lets say that each sector is about 500-1000 meters in distance from each side of the sector. Each sector has a standard time for when zombies will respawn in the sector lets say 100 in-game hours or less or more that can be managed by a player. I would also recommend the player being a moving sector that zombies will not spawn within the distance of 100 meters in that area. Zombies may need to be slightly more mobile for 100 meter spawn distance maybe 50 or less but as long as it ain't right in the face of the player. A event that will cause that player sector to be ignored can be when a player sleeps or when they are in a house or something but still try to not have zombies spawn in their immediate area.
So basically I would recommend a time, area, and player location dependent non-spawn, or spawn system implemented. Below I also offer an idea of adding fortification spawn rules also. The rules I recommend I pretty much would make them manageable by players also.
When constructing fortifications or walls etc. (IDK if this is already an idea implemented I have not built anything yet) I recommend having a no spawn zone roughly in the area of the construction such as if a box of fortification is constructed around an area zombies will not spawn within the fortified area.
I would not expect any of these recommendations to be implemented any time soon even if they were not planned or planned already. I assume you guys already had these ideas honestly but thought I might as well let you know about my perspective and I did not see anyone mentioning it but it is a far future thing than a bug or immediate focus issue.