I believe the resource gathering rate is perfectly fine (and a little over-excessive), aside from the daily quest which is trolling.
You have to look at a thing like this:
a 3* weapon fusion uses 30 photon quartz, and 4* weapon fusion uses 40 photon quartz, which this calculation if this game has 15* weapons, that's 150 photon quartz?
Think that's too much? No.
Daily photon quartz collection is around 30-40.
Say a very casual player does the collection 3 times a week, and each time he only collects half of them.
How many photon quartz would he accumulate in a month?
that's 3 x 15 x 5 = 225.
You see, players generate resources way faster than they could consume. In a year people would have 10000+ photon quartz in the inventory and find no way to use them all.
I just hope Sega does not release new resources to obsolete old ones to incentivize players to play newer contents.