Dude, do you actually play feral or what? Savage Roar and Incarn Rake both snapshot. The rake you apply from stealth has a double damage factor and it remains for the duration of the rake, and it can be overwritten by a weaker Rake prematurely. Don't take it from me, go ask any top feral, heck go ask Pawket if you don't believe me. Rake snapshots the incarn multiplier during application.
The fact you failed to consider SR as a bleed-snapshotter staggers me. You talk about how easy Feral is and stuff like that, and yet you thought only TF and BT snapshotted? What, do you think doing SR when bleeds are already up will dynamically scale them? Wrong!