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.