... and then people will complain that their patches do strange things because they created fanning-connections with undefined execution order instead of properly using the trigger-object.
I don't think it's a good idea to encourage outlet-fanning with a keyboard shortcut.
you don't need trigger for all occasions. sometimes it doesn't matter in
which order the messages are sent, only that they arrive - like in come
cases where building a spider web is necessary because of lots of
inputs/outputs to connect (for one example look at the hide-show subpatch
on my gui-edit abstraction). I don't do anything without trigger, when
it's necessary.
But it's also not that bad to let people make mistakes. Then they'll learn
quite faster.