Ok, 2 years with no update had it's reasons. After the last pictures were taken none of the trees woke up except for the multitrunk one (that one is a real tough bastard). Over the course of the following year all of them but one died. The one that didn't die was the one with the most potential that I spoke about earlier (now it is the only one with potential...) Strangely it didn't develop leaves for the whole year but I kept it anyway. And guess what? At the beginning of the following year it sprouted leaves again after being leafless for over 15 months.
So I gave them a haircut today and wired some bigger branches.
The broomstyle one: Pruned the sacrifice branch and some branches that had no future. In a few lonths I will try to groundlayer it to get a better nebari.
The multitrunk: This one has been growing good for 2 years so it has a 1 year lead on the broomstyle. Cut back some branches to greate some taper and wired some bigger branches.