Titans could get bonus melee damage based on how high their Resilience is, Hunters could get bonus melee damage based on how high their Mobility is, and Warlocks could get bonus melee damage based on how high their Recovery is. This damage buff would not apply to charged melees (many of those need a general buff, and that's a separate issue). At minimum, melee attacks take out any non-super guardian in 3 hits. 2 hits if the guardian in question has literally no resilience. At maximum, melee attacks take out any non-super guardian in 2 hits. 1 hit if the guardian in question has literally no resilience.