I like these ideas. I also like the idea of having an option to make the game decide to get dynamically harder when you do better. You can add a difficulty level which can let the game get unfair at points. I don’t like the idea of making mobs ‘stronger’ than they normally are, but I like situations where they throw more of them at you.
–your going around. all of a sudden (and out of no where) the building you are looted is surrounded with 50 zombies.
–your injured a little and then game decides now is a great time to screw you so spawns some zombie dogs and ‘faster’ mobs since the pain makes you slower.
–you wake up in the morning and raise your weary head to find your shelter surrounded by 200+ zombies(maybe 1000 if your in a city apartment). so you better have traps and stuff prepared. --Basically just auto-spawned. Game can give you some time, but this makes securing your shelter with traps and boards, and lots of guns and stuff critical. Makes strategy important. do you have lots of pits? to slow down the bad guys. or do you mix with 1 off traps to damage or kill some as well. but once these are gone, they get through. Do you board up all doors and windows (save 1 window) to pin them down. eventually you gotta eat though? You could also do additional construction to funnel the zombies if they get in.
– do you have heavy furniture in behind your doors that you can quickly move to make it harder to bash doors (this is not in the game yet. furniture doesn’t block doors.
– do you have a getaway car with a stash? , but you gotta get to your car… and then drive through the zombies.
longer you live, the harder the game can get. this needs to be an option cause if your not experienced its pointless. right now, there is not alot of sense of urgency. your only urgency is ‘get water’ and way to purify water early. after that, nothing is really ‘urgent’. with these types of things, securing your shelter is really important and its ‘urgent’. you will need to carefully decide which skills you want to work on in preparation for the coming hordes. You dont have time to get good at everything. you need to work out strategies such as the best way to lay traps. where to stockpile ammo, rocks, etc… in your shelter. how to construct your shelter. do you want a second wall around it? A fence in front of some doors?