Please PA fix the zones left untouched for so long. 

Adjust agris consumed at some areas to make it cost less basically like what you did with hysteria and akamon.  
Stars end and Syrcia would be nice to consume less agris there. I wouldn't bother with elvia those zones make enough silver as it is.

Add new items to zones man better loot tables are more fun. Should always be one grinding event item going for everyone zone that's really cool. 
Blackstone bundles Chapras stone pouches(5x) add these to all the high end zones apart from elvia.

Add a new item called mysterious treasure chest drops random goodies inside stuff that is really really good and valuable. However it is very low drop rate something like one in ten hours grinding. Hard to get but not impossible. Make it give bunch of different rewards at once different tiers.

Enhancement mats 

Acc pri-tri 

and something else idk. 

Just be more fun if there was some more drops in the zones. Maybe add more acc to some spots. Also a add a pitty drop at stars end to craft disto slightly better drop rate then disto but not much.