4 dps games exist, 3 dps healer games exist, 3 dps tank games exist.
I get that some players don't enjoy tank/healer but that's what the game should be played as. 4 dps games are a complete joke. The game should be played with both tanks and healers. How do you expect a new ranked player to load into a 4 dps game, get tunneled by 4 people then die. It's just a complete joke. When you have no consistency in solo queue whether it be tank/healer to 4 dps it makes it impossible to balance correctly. Ex. Powertech, Lethality Operative. Those classes end up not being played much if at all in 4 dps games but in group ranked they are among the most broken classes. So this leaves powertech specifically needing a survivability buff in 4 dps games but not in tank healer. This renders the game completely out of balance. Also not to mention jugg tank is literally the only playable tank in any competitive game.
PLEASE REMOVE 4 DPS GAMES, 3 DPS HEALER GAMES AND 3 DPS TANK GAMES - IF YOU CAN'T PLAY TANK HEALER, THEN DON'T PLAY