Crystal Bonding

With the Crystals Being a Hard Daily Task and very Crucial when you don't finish it, cause it gives additional vet/exp challenges, that you are forced to use to farm the blocks and gems, wasting it.

I suggest that you can exchange fragments for blocks, and blocks for gems

With their corresponding class, E.G. can only exchange simple frag for simple blocks

3 Fragments is equivalent to 1 block
Whilst 4 blocks is equivalent to 1 gem

I love this idea, I often get tasked with the same crystal several days in a row and it becomes an annoyance to have so many other crystals taking up space in my bag.