Hi there, the suggestion are listed as follow,

1. The cost of relic weapon upgrade is far too high.
With 825 mythology tomestones, a gear of clothes or trousers will be exchanged.I think the cost is worthy. But to get a relic weapon, player will slay many monsters, confront numbers of bosses , get through some dungeons and survive in three trials. when all above are done, 900 philosophy tomestones are need to get the lvl.80 relic weapon.A relic weapon zenith is only 10 item lvl. higher than that but needs 900 mythology tomestones. In my view, the cost does not match the reward. So I think 300 mythology tomestones would fits the reward better.

2. Most lvl.90 armors cost 825 or 495 mythology tomestones, which means player can get one every 2 weeks. And player can only get one gear per week in crystal tower. So I think in the crystal tower, player can get 2 gears or more per week. I strongly recommend 1 gear per boss per week.