Before 1.18 you could do mixed nodes, to triangle...
for some of you that's going to be a big ol' 'wut?', so I'ma explain:
So to repeatedly harvest in a given area you had to hit 3 distinct nodes, so by the third you could go back to the first...
Well used to be it could be any mix of nodes you wanted, meaning I could do 2 Mineral Deposits and one Tree, or say... a School of Fish, a Mineral Deposit, and a Tree...
Well. In 1.18 they removed this ability...
So why is this bad? Maybe it isn't I guess... what it amounts to is that it let you really tailor your Gathering 'Fatigue' Session (meaning your pool of 150/250 successful gathers a day) to be only in those deposits that held the items you really wanted.
For example, going for the two silver bearing nodes in an area, and then saddling up to random trees nearby to complete the triangle, and dedicating every single MIN attempt at a chance to get silver.
Basically now without this, it's likely that people who used this technique to 'target' the items they wanted are now going to have about ~30% less production of those specific resources.
I'm sort of bummed out about the change myself. But I know the economy hawks are probably happy to have additional limitations on the available pool of resources coming into the markets.