D2X-XL v1.10 now offers lightning effects in various flavors: You can place lightning emitters in levels, enable static discharges on damaged robots and player ships, have certain robots emit lightnings, see lightning effects when the player's energy or shields are replenished, and use a cool new lightning effect for the Omega cannon.
As if that wasn't already more than you can shake a Mega missile at, the rendering engine has been improved to handle transparency way better. Smoke rendering has been vastly improved again. And finally are the light trails for energy shots looking better than ever before! :D