Dunno, back in the day i hated rep grinding...was tedious and took forever to gain reps. Now gaining rep is a lot faster and less tedious even though time gated.
I highly doubt if they remove time gating they would keep the same amount of rep gains you get and instead reduce the amount you gain, which in turn makes it less enjoyable for me.
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You mean ancient reefwalker bark? That one is just weekly. and the 250 rep is from followers gaining a level. Think the green one you can farm is just 20xp per follower.