My biggest induction cooktop issue isn't heating speed, it's heating coverage. My 14" cast iron doesn't head edge to edge on my cheapo $60 induction unit, and that's really frustrating. Sometimes I turn on the gas stove to get the job done!

For all the marvels Impulse offers, it's still only a 9" 'burner'. This would be the top thing I'd like to see fixed.

I just got a nuwave eletric wok, and am really hoping that it can do much better on my stir fry.