I'm definitely warming to the Team-based maps these days. A month ago I would've put them right at the bottom of the list, partly due to lack of skills on my part and partly due to not seeing any kind of teamwork. Recently, I've had some great sessions where our team have truly worked together though, and that's when those maps really shine.
Unfortunately, in many cases, the norm for some players in a larger team still seems to be "I'm going to do what I want, screw the team". This is the mentality that results in every single person on your team going for the ball or the puck at the same time - while leaving the goal wide open. The tussles that result from this can be hilarious at times, but it can also be frustrating when you see the other team working well together while your team are running around like a bunch of headless chickens!
I see this a lot with Trebuchet, Fluffy Redemption, and Into the Game. I love the first two (still on the fence about Into the Game), but as @Nullstrukt says, you need a decent team alongside you. I've lost count of the number of times I've had the lollipop on Fluffy Redemption and have been in a perfect position to give an invader onto our train a good whack with it but been thwarted by my own team just deciding to all pile in while completely ignoring me.
It seems this is an unpopular opinion, but Castleween had to go near the bottom for me. I've had some fun sessions with it, but struggle massively that I just can't see who's on my team a lot of the time. You only see the name badges when the players are lit up, and if you've got other players using the same outfits as those on your team, then it's very difficult not to crack them on the head by accident. Maybe I worry too much though. I've lost count of the number of times my teammate has cracked me on the head or thrown me off the castle.
Maybe I just need to find a different approach with Castleween. I've noticed a more stealthy approach is taken by some, so maybe I just shouldn't treat it like a dark Ichiban and make some adjustments.