Why Cap currency????

100k on something you can (currently) earn a maximum of 1300 a day isn't that bad. Thats 76 days worth you can save.

Early game will spend on shards, mid to late game just zetas, interested to know why you'd need more than 100k saved as even if income improves with refreshes of the store every few hours you should be able to spend on what you need.

Right. They don't like us saving up for specific characters. They want us to use the resources right away. Other games don't have caps, or if there is some sort of cap, they make you have in game purchases to increase them, either In game currency or Money, or both. Still sad they don't let us save up as much. Some times Players get busy and claim rewards and forget to use right away until the next time to claim them(I did this with Raid Rewards a few times and had to spend down to claim).