Does anyone else feel like hordes could've been much better implemented?

Hordes, as much as we hate them, are without a doubt essential to the world and gameplay of days gone. My only problem is that I feel like they don't feel like a necessary thing to get rid of (because there's so many freaks deacon needs to kill them)

I think it's a pretty bad mechanic that hordes respawn eventually even after you wipe out an entire one because it makes the effort feel worthless, it should be like infestation zones where once you've destroyed it, it's gone forever.

I also think some of the numbers are completely unnecessary, such as the napalm mission having 300 freaks. Who actually fully enjoyed that mission and didn't have to tediously drive on their bike??? I honestly wish the hordes were better made because they had so much potential to be fun instead of just being a pain in the ass.