Something I've noticed in WAM is that we don't really see any pie fights anymore

I don't mean a structured exchange but a full on, free for all where people just take what they can and use it to get one another messy

I'd love to see producers try it as a sketch idea

This is a good point. I guess the thing about a free for all is its presumably much harder to film and capture all the key hits. One of the things that's always impressed me about the classic MessyFun 'Pie Wedgies' scene, is the skill with which the free for all element toward the end of the video is filmed. They really get some good shots of the key action, despite it seeming to be a genuine free for all. This must be trickier than a staged 'tit for tat' type scene though.

This feels like a golden opportunity for The Man and The Wife team.

I second this idea.

Well, I suspect that what ends up looking like a free-for-all was a big budget production. They would have to have several cameras recording throughout. And then they would have to come back later to stage close-ups of some of the key hits.

I did something similar once. We had one cameraman who was tasked with moving his camera about to point at the main action. Another was set wide to capture overall shots. Then at the end, several close-ups were filmed. Video from all three was then edited together in post.

Spontaneity takes planning.

Yes I like mass pie fights, Great Race style, but I also like the slow build up tit for tat type fights, which escalate into a huge battle.

Love the idea but that would involve lots of models, supplies, multiple cameras (money). More editing time and no guarantee that you would have a good scene at the end because it's uncontrolled.
Add to that a niche market, not everyone likes uncontrolled or enjoyment or pies and I find it very hard to believe a scene would make it's money back and unlimitedly producers are in a business. I am sure many would love to shoot that, but not out of their own pocket.

Now, if YOU wanted to set the scene and fund the custom, I am sure you can find a willing producer.

A good pie fight should at least start slow so all the main characters get pied individually before the chaos starts or at least stop the chaos for a second when a clean person enters and have a closeup of them getting nailed.

Problem with the mass pie fight: to be worthwhile at all, the ENTIRE thing has to be planned and staged, carefully. All those mass chaotic "pie fights" (I use the phrase sarcastically) that come at the end of a Latin American EEG gameshow individual pie-off do absolutely nothing for me & are just a total waste of pie material. Nothing can be seen clearly. Practically all the mess ends up on the floor, not in pretty women's faces.

It's bad enough in the pie-off segment of those Brazilian, Ecuadoran, etc gameshows
that more than half the time the women cannot even hit the face of the other woman
head-on, but instead misses, while delivering the pie directly, by physical contact.
Not even talking about throwing the pie.

I know we all, myself too, have in mind the image of the carefully choreographed 4-minute pie fight from The Great Race. That took 4 or 5 days to shoot.