So as everyone should assume, NA will mix with LATAM to make 4 seeds across the 4 groups, LATAM is the only region with a single team moving on, every other region (other than EMEA) has 2.
SEA, BR, JP and KR will be split across the 4 groups in some mixed up way, no two groups will be similar, as such:
SEA matched with BR/JP or BR/KR or JP/KR
Two groups will not have NA, EMEA, SEA, BR for example, this should not happen; if it does, then well, rito pls
Predictions:
I believe Riot will use Iceland results to assist in the seeding, although many teams are not attending from each region, SEN KRU CR are the only 3 teams that will have made both events.
However, teams like Nuturn would previously be seeded high, therefore, one can assume VS will be as well. VS will most likely be in neither EMEA seed 1 or NA seed 1 groups; so probably Acend's group (EMEA 3); This gives effectively Acend the 3rd seed in that group, with VS being top seed and 100T being second seed - this followed by 4th seed team from BR (loser of finals, probably vivo; havan too good)
Going along with the 3 teams that placed in Iceland, SEN will obviously be the top seed in the event, meaning their group should have only one other strong team, potentially the top SEA seed. This paired with G2, EMEA's 4th seed in a group with NA's top seed. This assumes Riot seed LATAM as the "4th" NA seed. Finally, a weak team, similar to the likes of Vivo in group A, every group will need that one wildcard, this group having the bottom JP seed, CR.... if anyone reads this whole post i love u.
Now, KRU, another team from Iceland, likely seeded quite low in comparison to the likes of VS, all of NA & EMEA and even Havan Liberty; I think anyone is competent enough to see where I'm going with this one. The 4th team for this group being either F4Q, Zeta or the bottom SEA team; yes, I used a random number generator to choose this one.
And then for Group D, the leftovers.
Group A: VS, 100T, Acend, Vivo Keyd
Group B: SEN, BREN, G2, Crazy Raccoon
Group C: Gambit, Havan, Kru, Paper Rex
Group D: SMB, NV, Zeta, F4Q
I tried my best to come up with as fair seeding as I could here, and I can only assume that Riot will have a solid dozen analysts choosing some of these teams out, and as stated at the start of this very long post, (sorry) SEA, JP, KR & BR could be swapped in any way, but I tried to play off regional strengths the best I could.
The order of teams in each group is also seed order, I kind of had to put NA and EMEA at the top of most (b,c,d) groups as Iceland had SEN & TL topping the 10 teams in seeding at Iceland, however, I suppose group D could have say Havan Liberty or Zeta Division as its top seed.
If anyone agrees with these groups, I'd love to know who you think would move on from each, assume that in the single-elim bracket Winner A vs Loser C, Winner C vs Loser A (opposite sides of the bracket) and so on.
If you disagree, fair enough if you just downvote, it'll hurt a bit (not really) but if you feel like commenting how you think the groups will actually look, give it a go :)
EDIT: Filled in gaps in groups with EMEA, SEA seeded teams