This is a really cool idea but needs better execution.
The visual style is cute and appealing. Consistency is top notch. There are plenty of snippets that show your proficiency as an animator but for the most part all the shots were lack luster. I think my favorite bit was the Deadpool and Colossus duet. Deadpool's hand being crushed was really nicely animated. The pacing went a long with the music well but all the animation felt like it was being held up by the songs speed. The chorus text cutaways are probably the thing I dislike most, very straight forward with nothing appealing to keep your interest at bay. Music could use work.
There's a lot of talent here for sure and you should be proud of all the work you guys put into this. Look forward to seeing more from you. Congrats on the front page!