Regardless, if things work out and the Speed Force returns, I’m pretty optimistic Nora West-Allen could return to the show in the future.
Who knows, maybe the essence of the Speed Force (in the form of Nora) was just being dramatic about The Spectre’s energy corrupting it?
I would wager it all depends on what happens with this artificial Speed Force storyline, and whether that power is just for Barry, or other speedsters as well.
It seems crazy to me that Oliver would’ve bestowed that power on his friend without warning him it could potentially destroy the power of speedsters forever.