You can cause your bugs to rapidly grow and evolve, gaining special traits not naturally available, such as invisibility or fire breathing. Any additional powers you may have can be expressed through your bugs. (Bugs with tactile telekinesis, or bugs with natural biological tinkertech for example.)
Your bugs also become more independent, able to understand and obey your orders even when outside your control. The longer a bug remains under your control, the greater the changes and stronger they become. You can even cannibalise other bugs under your control to increase the rate of other bugs mutations.