I was looking at this tree from the swindon winter show and a wild tree i snapped in the park the other day....then a virtual of how my maple could look without the middle trunk....just some thoughts, i think this is the best direction
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both the sub trunks in the show maple and wild tree are of a similar height.....but it seems to work
I guess to make that work you need to get some back budding further down the trunks, add some interest and character in the long slender trunks, at the moment they are quite feature less?