Because right now, you can get 3+ crystal types per pull, and up to 6x crystals per mob. Say you get exactly 30x crystals from a certain pull, 10x each of 3 elements. That would equal 3x diff ROE completions currently. The consolidation idea would reduce that same pull to 1x completion. Over time it should balance out to ~1/2 the completions due to the increased/doubled 20 per completion. There are also things that are based on your total ROE completions, and imagine that in practice, it would result in less accolades/sparks over time.
There are also problems with completing the same ROE multiple times at the same time sometimes. I've had them get clogged up so they wouldn't complete due to that. Consolidating the crystal ROEs would increase the risk of losing completion credit due to this happening from 25/33% to 100%. When it happens now, it's a 1/4-1/3 chance due to normally getting 3-4x diff element crystals per pull. If there is only 1x ROE, then if it gets stuck, it's a 1/1 loss. I believe there's also a higher chance of it getting stuck since everything is getting dumped into a single container instead of being spread out.


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