So I tried searching to see if anyone else had similar feelings, but the search function didn't turn up much, so here goes.
I feel that heat boosters, in their current state, are completely pointless. Even a 5* item at lvl 9 does not take long to fill the bar. What purpose does a heat booster actually have? The true barrier to heating gear is the crystals. I feel that in order to make them not a tragic waste of money, how about they also double the amount of heat crystals you can find? (every 1 looted awards 2 picked up)
Heat Amplifiers should retain their current function. Changing their purpose would add further complications.
What Heat Amplifiers do right now isn't what needs fixing.