Stealth, along with maxed out smithing/enchanting, is easy-mode in Skyrim. My first character was a sneak archer. Not once, even on master, did I ever feel in danger.
I dont play a stealthy character. Granted I am level 42 and my sneak is 75, but the way i play leads to improving stealth.
What i do is i sneak around and try and pick off targets till i am discovered, as is the most strategically sound tactic, but if i am discovered, then i go into full blown melee to finish the job. I sneak around dungeons so i don't alert the hoard, so to speak. Being a melee type doesn't mean always rushing in and taking everything on at once. I play smart, not hard.
I wouldn't say most dominant I think warrior builds and stealth are about on par. I enjoyed magic as well in Oblivion, but not having a spell creation system sort of ruined magic for me in Skyrim
My Assassin was virtually invincible at high levels with sneaking and a legendary Daedric bow. I one shotted pretty much everything. That's pretty dominant, IMO lol.