DEATH, DOOM, AND DECAY! Or could we get a bit more challenge, please?

As fun as this game is, I think it could do with some more challenges. I mostly play on hard/custom, and once things are stable, the game gets stale from a lack of obstacles. So, here's what I suggest:

Death:
Beavers should die more often: Injuries happen, but are minor setbacks at best. I suggest that industrial accidents can sometimes be fatal, more accidents can happen to beavers in general, and medicine should be brought to both factions to treat more complex injuries.

Doom:
Others have suggested more extreme weather. I agree. Weather should also break things: Too much rain? dams collapse, buildings break from flooding, beavers are swept away. Storms? tall structures can collapse. Buildings are made of wood, droughts should cause a fire risk. Firefighter beavers should balance that.

Decay:
Supplies and buildings shouldn't be stable. Food should rot. buildings should need maintenance or risk collapse. Builders should do that maintenance.

So yeah, that's my ideas.