The last three, you mean? ;D
RoI wasn't as bad as everyone makes it out to be.
As far as Forsaken goes, I could write an essay. What it did right, what it did wrong. The Story is great but the hamfisted handling of Morality felt very off to me, and turned Ghost into one of my least favourite characters in the game (And considering there's maybe 5 characters total...). The Dreaming City is amazing but I wish they'd advertised it less, the impact of the zone would've been enormous if we didn't already know it was coming.
On the subject of the Dreaming City, it's everything I've ever wanted out of Destiny. A deceptively massive patrol zone with no end of things to do, even if those things are literally jumping on rocks to see if there's a secret up there. I love it an unreasonable amount and I pray that the next expansion or installment of the series captures this gameplay again - Vast patrol spaces are awesome until you realize there isn't anything compelling about them and you spend 99 percent of your time running through them to get to the next event.
And don't even get me started on the Lore. We finally have IN GAME lore, and muh gawd is it everything I ever wanted out of this universe.
The gameplay is amazing, loving the changes made to weapons, so far so ridiculously fun.