I have updated the execution to use the nested nodes... Not sure this is perfect !
this is great news. i'll try to go through the code before noon.
i'm currently doing the sync and have some minor remarks that i'll post in a separate topic
i saw the impl of the sequence, the for loop in there didn't really match my expectations.
thinking about it, it still might be correct. we have to think this through probably next week.
i'll have a look at the nested node execution update (i must have missed it in the first scan)