Has anyone done the math - can you get to max progression now with only 4 clears if you also 4-clear the required 5* node?
Someone stated in the first 5* event that yes 4* of all nodes including the 5* seemed to be enough for that event. Mileage may vary from event event to event.
I found this to be the case, although the events had wave nodes, which might throw off the math. An event without waves might require more than just 4+ 5* essential
It should get you close enough that you can make up the difference with a few extra clears in the last sub if you need to.