There is no worse feel than spending all day progressing through the obnoxiously larger rank levels of Platinum and up only to lose all your progress due to a bad streak. I have no control over who I am grouped with or against. Even were I the best player in the world, I can't carry a team that either isn't trying, isn't focusing on anyone, isn't using their defensives, and is just altogether playing badly.
There is no healthy way to grind to Crystal. You MUST devout absurd amounts of your own free time every single day if you want to get there within the forseeable future. And even then, you can spend an entire day and just be one win away from ranking up, only to suffer a horrid losing streak that takes you all the way back down, invalidating your entire day's worth of time and effort.
Some people have said "well we can't just make your progress permanent else we'd have so many people reaching Crystal", to which I respond: So what? What is your point? Why is that a problem? Take away the garbage rank decay, and people still need to actually win to get to Crystal. Due to the 5 v 5 format, there is no way a person could ever be carried, so if they manage to reach Crystal it's a testament to their own capacity as a player. Obviously the RNG factor is still there, but at least you still aren't going to get far if you're actually a terrible player.
This a garbage, indefensible system that encourages extremely unhealthy playtime to stand a chance to rank all the way up. There is no logical reason for this besides padding sub time. This is garbage, it adds nothing of value to the experience in fact it detracts from it, it doesn't make it harder, it just makes it a thousand times more frustrating and luck-based whether you actually made progress today or had several hours of your time and effort completely invalidated. It doesn't make it more fun, it doesn't make it more rewarding, it is a pure waste of time and absolutely nothing else.
This is actually making me hate this new PvP mode. I no longer feel any sense of enjoyment from this. Even if I get past Platinum all the way to Crystal I won't be like "OMG I DID IT YAY" I'll be more like "Thank god this crap is finally over". Just take away the rank decay and make our progress permanent. This is a complete and utter waste of time and severely detracts from any enjoyment of the experience.