None of these really help . . . Anyone. They just tell people to stick with the leader trope. That strategy works just as well as any other, with unique upsides and downsides. You Don't have to have a raid leader to win easily.
I'd also argue on the resilience part; there is no change in survivability in res. 0 - 10. You want to balance mobility and recovery or max recovery. Yes this is a glitch. No it hasn't been patched.
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If all the raid noobs I've taken through the raid did most of these things, it be wonderful and so easy.