Love those trees!
Based upon many years of hiking in the mountains, not sure the tops of the trees in any option would hold the slant position for long In the wild. Even trees severely pistol butted from a landslide or avalanche will return to the vertical very soon.
That said B2 above is making the most believable design out of the clum… yet it might actually look better with more of a slant, perhaps wiring the tops vertical, or let the tree tops just do it themselves.
Yet, there is a discordance in one of the lower trunk shapes that makes all options somewhat frustrating….. (At least in these photos)… See the second trunk from the left in the photos.
View attachment 517324
Normally all tree trunks would bend successively in a similar direction. Could be just the view shown, yet one might consider doing something, blocking, wiring etc to bring the trunk into harmony.
Maybe bringing the trunk back and closer to the ground and then broaden downward and strongly sharpen the natural bend already there…. so the entire design simulates an avalanche event.
Just my two bits
Cheers
DSD sends