They need rework/change Ranked play, completely, bottom up tbh
I mean, sure, some changes may be done by updating the matchmaker, but at this point I think they wouldn’t make a mistake if they reworked the Ranked into a completely different beast, had a suggestion here if curious to read:
How to Fix?/Save RANKED PLAY in Heroes of the Storm (Documented version) - #9 by Lostariel-21800 [Part 2 has it]