It seems to be extremely counter productive to create such a limiting system. It literally makes no sense and seems very badly thought out and executed.
English
#destiny2
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It’s there to balance out some of the mod compatibility, so certain loadouts aren’t more dominant in Crucible and maybe in PvE stuff, but it also increases the grind, which sucks. Forgot who I saw mention it, but it would be nice to be able to reroll affinities or something of that nature.