you can if you don't want relic, but the way they built it your gonna have to do all 4 eureka maps a ton if you ever do

the problem with eureka as i see it is it basically is just grinding for the sake of grinding with only the very occasional boss zerg to break the monoton. They even put in that wheel thing to punish you for changing what your fighting

I feel like...
ditch the wheel, make the dealies into just def or atk buffs
make the zone be constant FATE-like events... like northern thanalan but way more. Escorts, Guard duty, extermination, notorious monster, outpost invasions, item gathering, etc etc Can even make the main base have a hamlet-like event. Would make sense
normal mobs drop materials for crafting "Eureka gear"
add gathering nodes also for "Eureka Gear"
Still have NM's but maybe be creative like FFXI was instead of every single one being grind this crap until your eyes bleed

just make the place... seem alive
commit genocide on the indiginous life for ...reasons just feels kind of lame for an entire zones reason for being