One minor feature I always wanted in KF1

I've always wanted a playmode that doesn't end with a patriarch. One that keeps going, slowly replacing normal zeds with more advanced ones, until the group died. If at some point you're fighting 10 fleshpounds at the same time, well, good job for living that long, and good luck. I'd also love to see this sort of mode give you less money with each successful wave, so by the end you're barely getting enough money to buy ammo or armor. Ideally, I wish you would have to pick between the two, until you died.

This sort of mode I would really love. I know that a game mode where you spawn a bajillion zeds to swarm players would likely have a huge performance penalty, but trading out normal zeds for the advanced ones probably wouldn't, right?

Anyways, I enjoy the games, I've just always wanted a way to ramp up difficulty in a different manner than merely making the individual zeds more powerful, if you know what I mean.

One minor feature I always wanted in KF1