@MoNosDirtyGamingI think a good lifeline buff would be a buff to blue supply bins spawn rate and items rarity. BH, Octane, Revenant and Crypto need big changes. There are already leaks about all characters having a class bonus perks, Basically tracking characters would be able to use survey beacons and their scanned enemies receive additional damage. Supportive characters would be able to use blue bins (LL can already do that). Offensive characters can carry more throwables. And defensive characters revive teammates with additional shield, All of these changes are great changes but some legends would need more than that.
