Half the reason they are too weak is that they spend too much time doing pointless things like landing then fire breath then take off again which takes like 5 seconds in between each other. If they are that agile in the air and can pretty much 360 turn instantly, why are they so clumsy, slow and awkward when making a ground attack. Maybe they need a roar that can knock back or stun. When i first encountered dragons in skyrim i told my mate, "this reminds me of Monster Hunter", except that these monsters have no special attack qualities other than fire breath, frost breath, some basic melee attacks and the end game special dragons. The reason bears, trolls and sabre cats etc are much more difficult is in their ability to constantly harass you unless you can think quick on your feet, with dragons its like playing a game of chess with it, it give you all the time in the world to plan your attack and heal up from his own.

I play in Expert. I do not mind for Master because it starts to bother me. It's not challenging, it's just annoying.

But I must tell you: Giants are a bit more complicated to defeat than Dragons. Seriously.

But I must admit: A Fire dragon kicks my ass. I am lvl 22 and, well, a nord with 50% + 40% frost resistance. Frost Dragons does nothing to me. I am a stealth based-light armor player. I just melee 'em!

Fire dragons are a censored problem... altough easy if you got the skills.

Dragons should really be more difficult. a bit more HP would be enough.