You should be worried about RJs, narrowbodies and widebodies with eskimo joe on the tail and not operated by AS pilots. The threat is real and can come in any form.
While the good economy and "pilot shortage" is a quasi protection right now, the economy can tank and the politicians can delete the 1500 hour rule.
Without a scope clause you are unable to enforce your contract at all.
Contract 2020 is going to be ugly and drawn out. Best hope is the eskimo gets bought out as B&B are going to make you pay big for scope.
I am glad I am out of here!