I don't like the point reduction, because for some infected like spitter, you don't earn much from spit unlike other infected. If we nerf it even more, then it is near impossible to buy tank on maps like Parish map 1 or No Mercy map 1.
Instead, if you spawn the same infected multiple time, your full health should be lower each time. Like 100% on first spawn, 80% on 2nd spawn, 60% on 3rd spawn and 50% for 4th or more spawn. Of course, for infected like boomer who is already low on health don't get this minus health counter.
Then maybe once the survivor reach a checkpoint, all the minus health counter will reset to 0
This way, we know the survivor has the upper hand if they are progressing and by resetting the counter on every checkpoint, we will give the infected a better chance to fight back.