congratulations on being undetectable! That's a promising first step! As someone who has almost the same RAVs, I feel ya. Some treatments don't respond as well as others. Harvoni failed me as well.
And I completely agree that docs doing more RAV tests would be best, but usually they can't do an RAV test until after a failed treatment. It's my understanding that RAVs don't have enough unique markers until they show a resistance profile when exposed to treatment medication..
That being said, it probably would be best practice to do an RAV profile post failed treatment.
I hope your undetectable status keeps on truckin' so you can reach SVR24!
-Rick Nash (Six Time Treatment Vet and Dragon Slayer)