Also get to use the knife we usually use while sneaking up behind them, and stealth killing them, but at level 5 melee, we should also get to use that same knife? Instead of bashing with weapons? Please?

get the option to auto-use the knife when meleeing, like if i have my pistol out, and i melee, instead of hitting with my gun, it will use my knife at level 5. Also, we should get an option to use the knife entirely.

Just a thought...