Lol, long review.
As a giant man-child who played an unhealthy amount of Kirby games in my youth, I couldn't help myself in watching something related to him...
I admit, and with all due respect, I wasn't expecting much when I watched this. It's quite similar to many other collabs, if not all, on NG now. Take a video game character - add real life situation/issues/memes, end. I made this mistake when I used to animate, of writing a script as I animated, instead of writing a script first, making sure it was funny/original, and sticking to it, and that I think is some advice to take home. With the amount of organisation that went into this, I have to question whether any time went into looking over the actual sketches that were being animated.
Some of the jokes were repeated, such as bringing to light the many fights Kirby has with Meta Knight or Kirby thinking he is gay because he is pink. A collab should really bring everyone together to trade and discuss ideas to ensure each sketch can be original from one another. As for the other sketches, most seemed to be some sort of situation such as fighting or talking followed by a very over done meme. There's no point putting so much time into an animation without thinking the sketch through itself. I made that mistake when I used to do it and I regret it so much.
It's difficult to do something original with video game characters as almost every joke could have been used for any other video game (for instance, Kirby and Waddle Dee talking in a bar to have meta knight demand a fight. That could have just as easily been Mario talking to Luigi to have Bowser demand a fight)
In your comments you mentioned this took nearly 12 months (which is perfectly understandable considering everyone has lives to get on with and such), but you really could have done something more. If you intend to do another collab, I would just suggest talking as a team more to ensure everyone produces something original and funny. Don't be afraid to say to each other if you think something needs changing, just think of the outcome.
I had no problems with the animation and graphics considering the age of some of the people who contributed, but the humour, which the animation is all about, just isn't there. I know "different people find different things funny" but if you all want to animate for these generic "4chan" jokes (which you will all grow out of very soon and cringe when you think back to it), you're wasting your time as it has all been done to death. Rick roll, firin' mah lazah... really?
Sorry, I'm not great at summing things up shortly without sounding like a cock. I'm sure you all enjoyed creating this. I remember how much I used to enjoy it. So keep going, but everyone, just think before you do.
Wish I could turn the clock back sometimes and spend those long hours animating something really worth while... (lol dramatic)