My 3.6 Plan

[Concillian]

I place 19 memories, and then the 20th I place is a boss node place?
Then, I can delete everything that I want that isn't the boss, and create a path to just that?
Am I understanding this?

There is a limit to the number of reward tiles that can spawn (20)

Each reward tile can be one of three things: Memory modifier, Chest reward, or a Boss.

there is a minimum of one boss tile in the 20 tiles. There's probably a minimum of others as well, so you can probably force whatever type of reward tile you want.

If there are 19 combined Memory modifier tiles + chest reward tiles, then the only reward tile that can spawn will be a boss tile.

The last requirement is that you have to have completed a special memory, which happens as a part of zana's quest line around T5 maps.

When you place & activate a memory tile, the nexus takes it's "turn" and has a chance to spawn a reward tile. So you can place & activate a memory tile then delete it and repeat until you get a boss tile, then plan your route to the boss tile. This makes "memory management" significantly quicker. You just clear out most of your nodes so you have places to put new tiles, and then it takes just a few minutes to see if you get a boss tile, then you know what types of tiles you need to make it there as well, so you can make sure you complete the right memories to get there if you don't have the right ones.

Try out Wild Strike in a 4L with your current spec and gear. I bet it's much smoother mapping with WS in a 4L and MS in your 5L than using MS all the time. MS maps 'fine', but WS is so much better, and they scale similarly enough that it doesn't matter that WS is not optimal, since you can use MS for the single target.