The main thing I look for in a game is fun.
Shooting a mini boss for 10 minutes while it can one shot you isn’t fun, it’s just tedious.
Datto mentioned this some time ago: increase enemy numbers, not sponginess. Being in a chaotic environment where you can get overwhelmed is fun.
Hiding behind a pillar and plinking is not.
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And then Bungie uses it as an excuse to nerf the tools we've been using to clear these tedious encounters.