lets remove them. Add in special attacks. Special attacks to me are like:
"Power Attack" = +50% damage, cooldown 5s, uses 3x energy of a normal swing.
"Snare Attack" = Normal Damage, cooldown 30s, uses 5x energy of a normal swing. Gives debuff of -20% movement speed for 10s.
"Lunge Attack" = Normal Damage, cooldown 5s, uses 3x energy of a normal swing. +100% reach of attack.
"Bleed Attack" = Normal Damage, cooldown 15s, uses 5x energy of normal swing. +100% damage of the attack over 10s.
"Stunning Attack" = Normal Damage, cooldown 30s, uses 5x energy of normal swing. Gives debuff of stunned for 2s.
These are examples. You would be able to bind them to a hotbar/keyboard. You click the button and the next attack would add that stat/cost/effect to the attack.
You can even make it limited to some weapons over another. Like a Pick and Blade can do a bleed attack. Shovels/Axes/Clubs can do Stunning attacks. All weapons can do Power attack etc.