Confirming as co-captain alongside my brother Squash for team France.
As someone from a "big" country, I have to support people who want less slots so that their zone has enough players, but at the same time less slots means that in France or the US, players will be left out, and I already know several people from France who wont have their own slot if we go 3-2-1. It also means that amazing tiers like BW and DPP PU wont be featured.
A suggestion that I absolutely disagree with is "only 1 SM slot": SMPU, like most SM lower tiers, is absolutely incredible and the metagame keeps evolving even today. It's also by far my favorite PU tier, and I'm pretty sure a lot of people here enjoy watching/playing SM as much or more than SwSh which is arguably boring. It's true that we dont have any ongoing PU tournament besides Snake kind of, so having a lot of SS slots should allow everyone who wants to play it to do so. But please, keep 2 SM slots.
Thus, Squash and I believe 3-2-1-1-1 is best. I really want to see SM, ORAS, BW and DPP games. Yet, if there's evidence that 3-2-1 would allow several teams to exist, then it's fine too: just dont forget some people could be left out by reducing the number of slots and that PU is a lot more fun with oldgens. Maybe there's a way to decide on this after the player signups, by classifying them and seeing whether 3-2-1 would be more inclusive or not than 3-2-1-1-1? I'm open to any criticism!
edit: we also are planning on allowing our french slots to rotate (not always, but as a perfectly fine option if someone wants to) so that everyone can play what they want. If you struggle to find a DPP slot (for instance) for your country, why not do the same and let people rotate instead of deciding someone will be the DPP slot for the whole tour? It's more fun