"Is there a way to fail sequence after specified number of children nodes fail? "
There’s a decorator that loops the node over specified time, and fails
“Can I invert the child node result?”
If you are using the number 1, use -1.
Other than that, you need to specify.
“Load different tree from within the tree?”
There is a node called “Run Behavior Tree” or something that can be ran in the BT.