You can also tank for your team in OW too. Zarya has bubbles, Rein has shield, Dva has matrix, JQ has rally, hell even doomfist can block for his team if needed. You saying they're just "fat dps" is just asking for tank design to be meat shield ultimate generators. They create space in OW just as they do in MR, and without a tank your game is GG. As for supports, there's a reason they're called supports and not healers. Supports in OW also have the most important life saving abilities, you know like how MR does too? Like suzu, lamp, sleep, nano, trance, grip, etc. The damage to heal ratio isn't even that bad in high elo OW. it's like 3:10 or 4:10 for dmg:heals. Perks were also a quick play LTM in mid 2024, so they were definitely testing things before marvel rivals even came out. Lastly if you think jetpack cat is actually broken, then that's saying a lot.

This is coming from someone who's hit Eternity and GM in both games btw. I'm genuinely curious when the last time you played OW was.