More utility spells please

I am playing orb of storms + spark + arc + mana tempest as my main damage.

I use frost wall skill and electrocute support gem as my defensive spells/supports. It works well but I crave for some knockback. I tried knockback support on spark but it pushes enemies too far and I cant do damage so it feels lame. Ice nova's knockback is lackluster in my opinion. A wind pushback and slow utility type of spell would be super good against hasted enemies. In breach or ritual scenarios these spells would save my butt because enemies spawn from all directions and surround me. I can sometimes save myself with freezewall but some enemies just pierce or break them.

I think more utility spells would help with meaningful combat too. I don't mind pressing more buttons. I already use 6 spells, can use more if needed.