[quote]They’re also flawed, in a sense. You get an overshield, reload bonus and melee buff when killing an enemy with a charged melee, but the problem is those buffs go away when the overshield is broken, and that overshield is made of paper[/quote]You forgot that you get health regen on kill whether your melee is charged or not. This more than makes up for the other perks only being applied with a charged melee.
Regeneration in this game is defined as a shield recharge. Striker Titan bottom tree melee perk is verbatim defined as health regeneration.
Sentinel melee perk verbatim states health “restoration”. Not the same.