The key chest disparity is terrible.
I'm currently at 4 chests and 2 fragments. So I'm 10 key fragments behind.
I feel like the system is balanced around people who can't get S ranks every week.
My honor is pretty decent too I think. I'm at 4-2 right now and I probably get relatively high amounts of honor from non-premade players. So it's very unlikely that I'm not honorable enough.
And it's been like this since the loot system started dropping boxes/key fragments. I normally end up buying 3-4 keys a year to keep it balanced.