Weapon grade 10 improvement

[Auche]

I think grade 10 weapon need improvement, lvl 1 to lvl 5 takes alot of Wyvern gem shards (10,20,30) and zenny, but the additional damage isnt worth, even i use grade 10 level 5, with lvl 5 element, still difficult taking down 9* and 10* monsters, please reconsider to make it worth the upgrade, thank you