Thanks everyone, I'm liking the replies! It looks like I'm going against the grain with this one, in more ways than one.
Graham, like you I have a long history of bush work in the forest and wilderness, 20+ years of silviculture and related and wilderness adventure tourism, great tree pics, inspiring, the Doug Fir is classic old growth, not exactly example of what I'm after here. I see different things happen when branches decide to take a shot at being leaders. Often it follows damage to the crown which is evident in my spruce. Often the existing branch tips start to grow upwards and curve skywards. Sometimes interior small growth somewhere along the branch length takes off and thats when you get the sharp angles, 90 deg or similar depending on the angle of the branch to begin with.
A related example can be seen along riverbanks, I've spent lots of time on wilderness rivers, recreationally whitewater canoeing and kayaking and professionally as a whitewater guide. Often trees are undermined on one side by river erosion and begin to lean over the water, we call them sweepers, get too close and you can sweep your clients right out of the boat into the river, always good for a laugh eh? Anyways usually the tips grow back upwards in a nice curve but sometimes a branch somewhere along the trunk takes over instead, again, sharp angle and the tip withers and dies. One larch tree I remember on a river we ran almost daily was like this. It fell over and stopped fully horizontal to the river at the top of the bank. A branch midsection grew straight as an arrow into a nice small tree. There were many of these trees along that stretch of river, frequently being eroded away and falling in but it was that one unusual larch with the sharp bend that was noticed by clients and guides, after high water events or big winds we'd ask ourselves, has that cool tree fallen in yet? It did 2 years ago. Anyways thats the look I'm after, quite specific. It absolutely needs a 90 degree or similar angle straight up from the branch to look the way I hope it will someday. If it looks unnatural to many, fine, to me it wont because I know it is directly modelled after natural trees I have seen and admired.
As for the other plants, maybe the trees would grow much better without them, I don't know, never grown trees in balls of moss before. Ive been watching them recover over the last three years, in the swamp they had yearly growth rates of 1/2" to 1", a couple of the more recovered ones had leader growth of 8" this year. Life in a pot is proving to be different, VASTLY better... so far.., ah, anyways I'll think about plucking some, I do have plenty of trees in traditional soils with little to no company. The base is hidden by moss certainly and is an unknown factor, these things slowly layer up the trunk as the muskeg grows deeper around them, surface roots may be a ways down there. I can say that as soon as the moss is peeled away it exposes trunk without the cool old bark as its been eaten away by moss. I may have to layer it in the end, a problem for later.
A few pics from my phone below, not exactly the growth pattern I'm thinking of, kind of similar..
Maybe in time as it develops some will start to like the design, it may still be in a mossy plant ball though, fair warning!