Spoiler:
1. This thread is not a comparison between Indigestion (mSH) and Shatter Limbs (Slayer). No one is complaining about how unfair or imbalanced both abilities are.
2. All that WAAAAAGH and Chop Fasta! has created is redundancy with BOTH coming in at a significant cost. One cost a tactic and cannot be cleansed (BO), Chop Fasta! (Enchantment) can be cleansed and is on a 40 second CD (1/2 uptime /50%; 10 point investment), which any Knight/SM worth his salt will immediately detect/shatter as is their duty. To even compare it to Rampage is a joke (30 sec CD: 2/3 Uptime; 6 point investment). Going to either Perfect Stance or Da Best Plan is also a non-argument. Since you can have it ready for any engagement in 10 seconds or less. SM/BO have abilities that do not need targets to rotate stances even without the 5 second stance switcher. It is a non-issue.
3. The anecdotal fact, which you admitted, about never having been threatened by Slayers in 6v6/wb/Scens/or 1v1 DOES NOT invalidate the present experience by a LARGE body of players in Destro. I posted before that in the recent weeks, if not months, SlayerDeathBalls in partial or FULL SOV have been farming IC and wrecking face with reckless abandon due to that ridiculous combo Rampage + ID + Shatter Limbs (?) + Retribution. I will even provide proof. Like it was mentioned in the post before you. The tanks take AMPLIFIED damage because it is undefendable damage, making it a bloody nightmare for healers like myself to even attempt to keep up.
October 11 2020. There were 3 Inevitable City Invasions that day by the way.