Water Field – Engineer water field is the most ridiculous combo field in the game. The water field pops for only a second. Regenerating Mist has a 60 second CD which is not fitting for a 1 second combo field. You can pull out 3 blast finishers given that you’ve readied your turrets and mine for detonation before popping a water field but that’s it. It’s hard to execute it with a team(multiple finishers from multiple players) because you only have a 1 second window to execute so it’s not even viable in WvW.
Extend it more to 5 or more seconds.
Lightning Field – Only elementalists have access to this combo field. Give Engineers access to this combo field as well as we are probably the second class that can be related to lightning and electricity.
Maybe give a 3~5 second Lightning Field to Flash Grenade.