The mission to get the black spindle is a challenge and it was worth all the effort when it dropped at 310 but now it drops at 290 with the same difficulty to get it. I think that it should be a bit easier for the attack that it is dropped. For instance a way the mission can be balanced is less enemies (or blights) or add more/remove time all together.
[armory]Black Spindle[/armory]
[spoiler]and while on the topic of black spindle i think since it is an exotic black hammer and the black hammer's white nail perk was nerfed that it would make it fitting if the exotic version had the original pre-nerf ability.[/spoiler]
but this is all just my opinion and most of my friends agree.
EDIT: B8 is as taken as Oryx
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It's not so much that it was 310 and now it's 290. I look at is as this is arguably the best PVE sniper in the game for raw DPS on some raid bosses. So I think the difficulty is perfect even at 290.