Let’s play Nostradamus

It sure seems like that... So something like 26 teams (logo + shirt double) + 1 team photo + 10 players (but with the image of 2 players like in the first edition) = 26 1/1 shiny stickers + 286 base stickers. Other sticker, especially those 75 will probably be used for those FIFA 365 unique chapters like FIFA Word Cup Moments, Youth WC, Future Stars, etc. And probably Star Player is coming back, this time in Fabric Edition.
That would be my guess just based on numbers that were presented, but will see how far off am I...
You know that's not gonna be the case, it gonna be one shiny or fabric (out of 107), one special (out of 75) and 3 base (out of 286) so in theory you would need 107 packets, but just based on the numbers you can see that 25 of those special stickers will be easier to get and 1/1 and 1/3 shiny will be more common than 1/2 shiny stickers... Again we will see how far off am I...
EDIT: If you were counting those 75 as shiny stickers than our thinking is the same, just wanted to add that.
Woah, already going deep?

But let's go, it's always fun to do it.
Yes, when I meant "shinies", I should have said "specials", to include shinies, fabric and those special.
Seems very straightforward how Panini will pack the stickers. The special/fabric/shiny stickers will be as you wrote. However, it depends how Panini define each uncut sheet. The ones we can be certain is fabric and special. However, the shinies have three types. Will Panini place all of them in one sheet or each sub-type has it's own sheet? If I'm not mistaken, Panini usually defines each sheet based first on material type and then the "cut type". So if there's different "cuts" in shinies, then I'll assume we have three sheets, one for each "cut".
Why is this important to know? Because if shinies were all from the same sheet, they would obviously have a pre-determined ratio. But if there's three different sheets, then we'll have three ratios. Panini usually tries to balance, just remember how big stickers in 2018 had so many different materials (fabric, silver, normal, double, triple) and yet, aside from few exceptions, they basically had the same pull ratio. So:
just based on the numbers you can see that 25 of those special stickers will be easier to get and 1/1 and 1/3 shiny will be more common than 1/2 shiny stickers
About special stickers, you're probably right. Big stickers means same size as cards, which means uncut sheets of 100 stickers. So if they have 75 different, but they ALWAYS fill 100, then 25 will be easier because they'll be printed twice, while the other 50 will be printed once.
But, if I was the one responsible for doing it and had some compassion for collectors, I would do two sheets for those 75, one with 50 different (so each sticker repeated twice) and another with 25 different (each sticker repeated four times), with obviously the 50-different sheet with 2x more pull ratio than the 25-different, to even both.
Then about the shinies: the 1/1 shinies seems as rare as 1/2, no?
Anyway, assuming again Panini will use the three different sheets, one per cut type, what you referred about the 1/3 stickers being more common is true IF Panini decides to assign the same ratio for the three sheets. However, I think Panini will try to balance the pull ratio by increasing 2x those 1/2 and 1/1 stickers. If so, the rarity will be similar to 1/3.
And if one fabric or shiny is placed inside the same position in the packet, then if both have same pull ratios (like alternating one fabric, one shiny, one fabric, one shiny and so on), then shinies are supposed to be more rare, right? But shiny/fabric ratio is around 60/40, so 3/2... Wouldn't Panini be awesome if, for every 5 packets, three were shiny and two were fabric (in average)? Both would have around the same rarity (but some stickers would still be rarer/easier... let's not go through this now).
And then, the base stickers seems easy to figure out: 286 stickers means three different base sheets (one will have 14 "doubles", which we can call it the "easy stickers"). And, what a coincidence, there's three places in packet for the base stickers... One per sheet? Remember that FIFA 365 2018 had the first sticker inside every packet "reserved" for stickers ONLY from the E sheet (which also had team shirts and players from Boca, Bayern, Borussia and Ajax).
Ok, this was fun, probably most didn't care though
