The following are my own opinions on what I do not use in game related to abilities only, I'm sure there are others that use these but what I list is my personal tastes and reasons.
Breath Weapons (ALL) : When every you think dragons (not eastern) which is the one ability that come to mind? However this skill hardly if ever gets used on my attack sequence. Why? It misses like no tomorrow and secondly dragons don't spit out laser beams but a cone, its supposed to be a dragons special mass attack? I don't see anything special or massive about it. All breath weapons should have a large cone effect or simplify it to area if the system doesn't support it and secondly the damage from a breath weapon is supposed to be strong not weak like a dog licking someones face.
Dragon Fear : I Don't use this skill much if at anytime. I am sure it has its uses in play and others might use it but honestly I don't use it. Never worry about adds.
Stances : Have not used them for over 5-6 years? Was useful at one time in the beginning when monsters would keep cycling stances but since that changed its garbage in my opinion.
Menacing Presence : Don't group with others much and when I do help lower level players they still die with this running on the target.
All other skills I tend to use in a session or two so to me these ones listed are the ones I scoff at as a dragon.