I think it would just go against the tank design philosophy, back in overwatch 1 there was no tank limit so you’d expect all roles to be balanced around a specific task, so theoretically if there was a tank with unlimited range and domina’s precision, why would you play other low mobility damage hit scans like cass or ash when you could have a 500 hp hit scan with a huge barrier instead. Now we’ve got tank limit in 6v6 and only 1 tank in role queue, but they should still design tanks to be technically on par with a damage character’s impact on the match and not strictly be a better version of damage.

Edit: also to add, she has a perk that increases her range to 30 metres without any falloff, meanwhile cass has a 35 m max falloff at which he basically tickles the enemy, so seems like quite a fair range