Most quickhacks are non-lethal, and the ones that are lethal don't do much. Suicide, Synapse, and cyberpsychosis are cool on paper, but the actual effect is lackluster. Grenade is milktoast most of the time. It seems like only Maelstrom has frag grenades. The only quickhack other than grenade with a chance to dismember is cyberware malfunction, and you have to wait for the entire duration to get the effect.

Synapse, suicide, and cyberpsychosis should make the head explode, and I wish there was an option for the cyberware hack to skip the malfunction part and go straight to the detonation even if the cost was higher.

I saw a mod for weapon glitch that increased the damage to make body parts explode, but mechanically it's stupidly overpowered because everything else remained the same. Cost, cooldown, spread, even jammer protocol. You could pre-hack a location, and the entire squad would instantly explode as soon as the fight started. It's cool but something that strong needs a downside.