Thanks for the list of bugs (though some are duplicated, so it should be consolidated). Hope Bungie reads this and addresses the bugs.
As for the exploits, the upcoming patch will fix most of them. Namely the light pillar launch, bridge part despawns and skips, and crota's forever kneel. With that said, I'm sure it's a matter of hours before people find another way to cheese.
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Most likely. I'll update the first post with new cheeses when people find/post them.