FFXIV Devs: Please STOP punishing normal players for others breaking the rules.

[technole]

Those are both before my time and I haven't had an opportunity to go back and revisit those yet.
But in my experience, if you have multiple phases or potential markers you need, then you simply place those markers at the start.
We now have two extra markers to allow you to plan for those eventualities. E.g. either marker 3 or marker 4 will be safe, someone calls out which one at the time.

Your experience hasn't gone far enough apparently, there are phase transition downtimes and expanding the enrage on Brute Justice/Cruise Chaser in TEA to draw out time for cool downs to come back up and manual marker setting if necessary.

Just because you have two new markers you'll lose the ability to have unique markers for phase 1 and inner circle mechanics. Which for fights like TEA people would use for Limit Cut. Or UCoB where they will take the Twintania stacks. Also for the phase 2 divebombs, there are proper, orderly numbers so you won't confuse who will dive first.

Some of UCoB's phase 2 dive-bomb patterns, markers they are placed in the order of dives, without an orderly numbers you can confuse which dives go 2nd and 3rd because it's not always by direction.

[Seraphor]

Some of UCoB's phase 2 dive-bomb patterns, markers they are placed in the order of dives, without an orderly numbers you can confuse which dives go 2nd and 3rd because it's not always by direction.

Looking at those diagrams... every possible marker would appear to roughly line up with a cardinal direction, and as we now have 8 markers, you can cover them all.
Pattern 1: NW > SE > SW
Pattern 2: NE > S > N
Pattern 3: NW > E > SW

[technole]

Looking at those diagrams... every possible marker would appear to roughly line up with a cardinal direction, and as we now have 8 markers, you can cover them all.
Pattern 1: NW > SE > SW
Pattern 2: NE > S > N
Pattern 3: NW > E > SW

There are 4 examples here out of several. You're also forgetting the fact you'll need two markers for the center safe spots from the earlier phase. Once again, you are just throwing something without knowing the fight in-general.