I actually run a beam with thermal vent on many of my ships. It's a very useful effect, helps a lot with heat management. While still doing damage. (Purely a PvE tool, though. While i am not a PvP player, i would not expect to be able to make best use of it in a PvP situation. )Beams are quite juicy and lack many useful special effects compared to the high damage, high utility alternatives of frags, railguns, or a small corrosive multicannon, but you can make them work.