As a long time player and follower none of these sounds interesting games workshop hardly keep up well with even distribution of there current factions let alone adding more I think the team need to better ballance and release for what already exists don't want to see chaos or bad imperial faction 2 or 3 as this doesn't really feel like an addition to the game or lore overall honestly don't think votann feels particularly additive to the 40k lore or game 10 factions that feel mostly unique is fine any more then that and it just starts becoming too diluted and the new factions start taking away from the original ones who should be getting updates
