I think solo tanks have already proven a single hero in a role doesn’t work. Supports power would need buffed sooo much to compensate they’d be beyond reproach by everything except an entire team dive. Ya know, like good luck to the solo tracer or genji flanking a support with double the hps, double the DPS and half the cooldowns. They’d get destroyed. Bap, as is, is already pretty much unkillable by flankers.