Incursions are not raids guys. And they will never be.
They will be 4 player content featuring different mechanics per incursion.
I can see them focusing on very different things for each incursion, like this one being a horde mode with a big boss that can only be damaged through certain means.
Another incursion could be a defense mission where you defend a target against waves, etc...
What I feel is that Massive is going for things that can be done in 30min or less and they never want to get you stuck in something for hours AND they don't want mechanics that basically become boring and tedious once you do them once or twice.
Destiny's raids are fun the first three times and then everything in it like the jumping puzzles or the platform jumping becomes entirely mechanical and doesn't matter anymore.
I can do the jumps in my sleep, I will never fail them and never do and I basically don't even need to do them anymore, but the game still forces me to.
Same with "jump on platforms in correct order" that stuff is just tedious the moment you do it with a group who has done it once before.
So I feel Division is going a totally different path than Destiny and instead wants content that plays differently because of it's enemies composition and the AI mixing things up,instead of using fixed mechanics that don't matter after the first time.
It's hard to properly explain for me, cause not native speaker, but basically we all know that AI can very often surprise you. Sometimes even just by glitching out or something.
We all know that one AI minion who suddenly showed up in a place no AI ever went to on the 50th run of something and going "woah wtf hahaha what was that?"
Of course we will all in less than 2 hours or so know where the enemies spawn,will then CC them to death and have everything figured out.
Thanks to streamers/youtubers who earn money from releasing this info and to the internet spoiling absolutely everything and posting the "most efficient" way as fast as possible, all this stuff will be figured out and on farm on Day 1. We know this.
I don't believe Massive made the waves random, which will probably be very sad and reminiscent of Destiny where you know exactly at what time how many of what type of enemy spawn where, but we can still dream.
I fully believe that any mechanics that rely on players doing a specific thing that never changes from run to run are completely useless and should not exist.
Randomization is THE number 1 important thing for me in games nowadays and way too few use it.