Something is wrong with crystals openings

I'm really convinced of Kabam lowering the effort to achieve 7☆ shards, making more juicy rewards but then they increased in an absurd way the chances to get a duplicate champ. So, in the long way, you don't get shards, you just get some sig stones.... that explains all the titan/7☆ crystals with the same champ opening. It's is hilarious and frustrating at the same time. And the worse thing is we can't do anything. Just asking for a fair opening. The crystals at the opening have 2 major numbers in the formula, the first one is the chance of duplicate or new champ, please make sure it is ok. Sometimes the formula had hardcoded numbers that get desfased due to evolution of the game...
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Anyways, It's OK... I'm leaving here... may be just my account is getting this odd probabilities...
Best Regards.