5v5 won’t destroy the game, because ‘the game’ is Overwatch 1. And Overwatch 2 will be very different by necessity (in the details). Too much will have to change (speed, abilties, CDs, falloff, HP, respawns) for us to safely think that It’ll be OW1 with a new coat of paint and one less tank.
It’s just not possible to think like that and genuinely believe it, I don’t think.
The best way I’ve been able to get my head around it (5v5) is that it’ll be a new game in the OW universe with the same characters and assets. But everything under the hood will be different–perhaps sometimes only a bit, but mostly by a lot.
You don’t take away a tank and make movement slower AND KEEP WIDOW THE SAME. So straight away, something has to give there. And that’s true in so many areas.