A lot of my issues lie with the powerups. Triple damage lasts way too long, and it triples where it used to double. It should go back to doubling damage, and it shouldn't last as long as it currently does.
Another issue I have is with the health pickups. Small health packs can't overheal, but they can still be used up by a player at full health. That could potentially end up getting an injured teammate killed, so I don't think it should stay. Additionally, overhealing should go. It's extremely powerful, and once again, it takes away healing opportunities for low-health teammates. In a game where the time to kill is so quick, and where there aren't any healer classes, it's important that health pickups be available as often and as fair as possible.
There's a noticeable gap in quality between the older and newer skins. This is most notable with Wil, who looks like a puppet in his older skins, while seeming much more alive in the new ones. It would be awesome to see the older skins brought up to par.
Last, there need to either be:
1) More game modes
2) More incentives to play the other game modes.
People only play team deathmatch; it'd be nice to find matches in other game modes.
The creativity in these stories is just so wonderful. Also, "No, just kidding. Wario got shot." made me literally lol. I've almost never actually laughed out loud at anything on the internet. Great job, as usual.