If you're looking to go all in to the
Guttersnipe/
Electrostatic Field route, then I'd lean in harder. Drop the Ball Lightnings add in another 2 mana creature that works on theme:
Thermo-Alchemist or
Firebrand Archer.
You need some form of card advantage to cast more burn spells faster:
Light Up the Stage and
Experimental Frenzy are the new hotness, but I am also a fan of
Risk Factor.
Speaking of Spectacle spells, they are easy to turn on in your deck. Some number of
Skewer the Critics would be nice upgrades to
Searing Spear or
Lightning Strike.
I agree with ditching the tapped lands. Burn needs to run fast. I'd stick with mono red, or get your hands on some
Battlefield Forge or
Clifftop Retreat style lands that can come in untapped.
Sideboard
Mindsparker as a budget Eidolon.
Deafening Clarion also works well in your side, because the Field survives the wipe, and the other mode makes all your pingers
heal you as well, and it clears out tokens, mana droks, Soul Sisters, and aggro threats.