When you are down to 5 zeds remaining before the trader arrives, they all start to uncontrollably rage.
I don't think this idea is necessarily a bad one - it discourages people from wandering off from the team at the end, and makes the zeds move faster to reach the players (nothing worse than spending half an hour trying to find the last crawler hiding on the map).
However, if you have a few big zeds remaining (scrakes/fleshpounds) they will start raging uncontrollably, and won't stop until dead. This seems unfair as 2-3 scrakes on near-full health raging all at once will badly damage a team, and sometimes (if the big zeds spawned just before the end of the wave) there's nothing that can be done to mitigate this.
Solution: When you are down to 5-10 zeds remaining, all the smaller zeds (ie. not scrakes or fleshpounds) will start raging and rushing the team, and one randomised scrake/fleshpound will auto-rage as well. When this scrake/fleshpound has died, the next one will start auto-raging (and so on until there are no more remaining).
This will ensure that people don't run off, keep the finale of the wave nail-biting (as it should be!) but doesn't end up with the team swamped with frothing big zeds tearing through your ranks.
I don't think this idea is necessarily a bad one - it discourages people from wandering off from the team at the end, and makes the zeds move faster to reach the players (nothing worse than spending half an hour trying to find the last crawler hiding on the map).
However, if you have a few big zeds remaining (scrakes/fleshpounds) they will start raging uncontrollably, and won't stop until dead. This seems unfair as 2-3 scrakes on near-full health raging all at once will badly damage a team, and sometimes (if the big zeds spawned just before the end of the wave) there's nothing that can be done to mitigate this.
Solution: When you are down to 5-10 zeds remaining, all the smaller zeds (ie. not scrakes or fleshpounds) will start raging and rushing the team, and one randomised scrake/fleshpound will auto-rage as well. When this scrake/fleshpound has died, the next one will start auto-raging (and so on until there are no more remaining).
This will ensure that people don't run off, keep the finale of the wave nail-biting (as it should be!) but doesn't end up with the team swamped with frothing big zeds tearing through your ranks.