Found a seed which I think has all bosses closer to the centre than any other I've seen so far. There's a Yagluth spawn less than 1/3 of the way to the rim, and all the other bosses plus a trader are closer than that. It also has a Maypole village in a mountain biome which I have not seen before.
Not everything is on one island, so sailing is required but the trips will be short. The only downside I can see is that there are no massive iron farm swamps near the spawn.
The seed is "ATuin" (yes, the discworld turtle)
Feel free to share any other good seeds you've found. 🙂
Source: https://www.reddit.com/r/valheim/comments/rzlaad/sharing_another_great_seed/
