I guess being Willow(?) they will rapidly regenerate, at least some foliage, particularly if the Orangs aren't tempted to climb in them so much as they are just tall stumps at present.
I wonder if they will add ropes/ plastic 'vines' to interlink the trunks, or just leave it to regenerate?
Actually this is probably overdue, I like the idea of more ropes and nets to get the orangs off the ground more: I wonder if they can devise a way of providing some of their food above ground level too.