i think you should lower the resources required for invaders to upgrade gear pieces it take 174 x2 legendary invader pieces to upgrade 1 piece of equiptment to level 9 then times that by 12 for each piece of equipment including shaman gear

that 2784x2 rare pieces of invader rss you need to make 174 legendary but you have to grind it for 12 times for each gear pieces or more on how many set you got to upgrade. Can you lower it to make it abit leas grindy.