Hardcore Kicks VSTi 2 has some particular features locked on the normal version and to use them you need to buy and Extended license.
The Features you add with the extender makes HKVSTi 2 extremely customizable. With the extender you can Convert .wav files into Native Custom Wavetables, convert wavetables as .wav files or export shaped waves many times you like.
With the extender you can create unlimited waves for oscillators and waveloader too. You can also make your own kicks samples became waves of oscillators.