In the beginning I hated Eureka (all except the place which is far more complex and rich and beautiful than any of the SB or HW zones were and thats how new maps should be like).
The painful slow lvling in the first lvls and the lack of knowledge on how exactly things worked it was discouraging.
Then I decided to press it on. Now I have 6 Relics and I will go for every single one of them.
Seems slow but it's actually fast.
I really liked the feeling of the old school MMORPGs inside Eureka. People actually helping each other inside there more than any other place I've seen.
All relics since 2.0 were supposed to be a grindy option. At least now I did it on a completely new area.
Don't forget many people were asking for a dangerous zone like this and an open world "dungeon".
The next Eureka needs some tweaks though.
Just fix the Horrible game breaking Culling, the painful anemos crystals turn in to protean which takes ages and perhaps the painful slow lvlsing at the first lvls and the next Eureka area will be better.