I think it'd be a good idea to explain which red circles you have a lot less time than it appears to dodge, but most people never figured that out to begin with so they can't explain it. This could be trivial stuff like the first boss in WP, or it can be quite serious loike Desolation used by the last guy in D Hold. "Dodge nasty stuff on ground" is usually sufficient as an explanation, but not when you know there are especially fast casting nasty stuff going on. It'd be unfair to just say 'dodge WotL' without emphasizing that the timing on WotL is extremely unforgiving.