Unfortunately, there's no easy way to fix that.
This got me thinking….sooo…
1. Telric has “thumper” mod which is like a alien crash landing and zeds come out. It’s fun and can really mess you up if you’re not ready to fight them if they land nearby your base/location. Additionally, you can get parts from thumpers to make your own thumper and then it acts like a zed beacon and you defend it for a bit…
2. There’s gnamod horde mode, which is a “defend the beacon forever” thing, where the zeds really really hate the beacon and attack it, and eventually it will blow up and make a big hole once you fail to defend it enough.
for both mods, the “zombie beacon” is essentially “player placed” or “purposefully placed”…
taking these “existing things” and smooshing them together may create a mini in game “event” that might shake things up….I present the half baked idea of: make a beacon (of unknown type/duration/health) randomly drop. When the beacon is damaged enough, it leaves a masive crater in the ground, massively damaging all entities and blocks like a bomber zed x10.
”randomly drop”: I imagine the supply plane could drop it, but then it wouldn’t always be “close enough to make you deal with it”, so maybe “randomly drop” could be like a screamer spawn (except beacon spawn) where it crashes down when the heat level is too high (and near your base/location) or maybe a zombie randomly drops a beacon like a loot bag drops. Maybe a bomber zed drops them more often if you kill them before they explode

. If you’re “out and about” and one drops: run away if you want to. If it’s near your base: you choose to defend/defuse or deal with the damage.
it would be kind of like a “oh crap!” Game moment, even during horde night, and you almost would have to defend the beacon or it wrecks havoc to your base or the land around it until it auto defuses (or you defuse it or maybe just pick it up?), and it would also kinda add a “secret mini boss” to the game.