Ovinomancer
No flips for you!
I was not comparing the Sneak Attack restrictions of other editions but the restrictions of other abilities/effects that could key off the weapon attack portion of GFB to Sneak Attack. To the best of my knowledge it has the most, in number and scope, and is therefore the most restrictive.
If Sneak Attack, with its many restrictions, is allowed a person would be hard pressed to come up with a reason for the others not to.
Agreed. An argument that something might not work with it is pretty useless without an example. Maybes are not good arguments.