I think some of my reasons for burnout are that temporal storms/drifters are cool for the first few instances but later just become an annoyance. Temporal storms end up just being sections of time where you go AFK on top of 2 block pillar and drifters are just fat little grey blobs that seem pretty out place from the rest the environment.
I think temporal storms should be much more rare but much more violent with monsters and drifters breaking your base and causing panic attacks with their screams. I like the idea of having variations on temporal storms (light, medium, heavy), but I don't think there's much of a gameplay purpose for them since especially with the 'light' variation it would just encourage people to go AFK. Also I think that surface drifters should be very rare and/or be limited to temporal storms since they don't fit in and are more annoying than threatening. The real threat should from the wilderness and the existing wolves, which are very scary and can be joined by maybe some other scary animals like grizzly bears, lions, and possibly dire wolves.