Eagon's Map Device Should Have Additional Scarab Slots

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I really like the memory threads concept and want to farm it for Dread, but I can't get past the fact that running the threads means I'm running them less efficiently than if I was just running ordinary maps. Why? Because Eagon's map device only has 3 fragment slots. If I'm going to go through the gauntlet of random maps that I may not enjoy, why would I punish myself further with also running less juiced maps?

Eagon's map device should match our own based on what slots we have unlocked.