I preferred them made out of branches… the diarrhea of bearer packs…
At first I was like why did they do that?
Well it wasn’t like I was totally against it, but when I began to think about how much I have always hated these palisades, I mean there was nothing worse than coming to a big base suddenly noticing you and/or your follower taking damage from something invisible, and then suddenly hundreds of them starting to spawn in all around you.
Sometimes they killed players and or their followers and in rare cases you suddenly found yourself fenced by them.
In my opinion they were a very cheap defense even in early stages, just looking at the noob river on the server I play on the bases are littered with these spiked defense, I would actually see them raise the cost of them by a lot more and perhaps even a limit on them like thralls because they are all over the place.
People say beginners need some cheap defense, but in my opinion they do not, they start out in an area with very little danger and purges are far up the their road… The more I think about it, I believe they are one of the big causes of lag and delayed base spawns, so I would be happy to see a lot less of them 
I stop using them since the game is able to stand out of reach and break them from afar with ease.
On Ps4 anyway, the cost to make them has always been… WTF?
several sticks and some rope cost insane amount of sticks?
Before you could place, and make path ways, they would have go thru, and this would in turn take a few out, or weaken them.
Now? The AI just attacks closest ones and works there way thru them to the base. They rarely take damage from them inless you place mid-fight around them.
I don’t think i’ve gotten kill from them… in months? Maybe at all this year? I still place them, but 1st archer to show up in a fight will snipe it. lol.
I think Spider purge I had, was only ones to walk past and take damage since there size, compared to how AI moves them about map basiclly lets them take hits.