First Time Warrior

Agreed, 2H Reaver has the most variety and hacky slashy fun.

Here's a build you can use: fextralife.com/forums/t167034/2handed-reaver-warrior-build--ragenroll/

Good ol'd rage'n'roll!

Second choice would be a 2H Templar. It's a bit more of a one-trick pony, though, with the Wrath/Purge combo, which is great for demons and stunnable enemies, pretty worthless for everything else.

2H anything is fun. Some highlights:

 * Grappling Chain/Give Them The Boot followed by Mighty Blow/Easy Target. That never gets old.
 * Grappling Chain/Chain for days *or* Whirlwind/Vortex of Steel. Best if you can have a mage lay a fire mine under you, suck the bad guys in, blow them up!
 * Charging Bull/Gore And Trample to knock a bunch of mooks down, then a free hit with Mighty Blow or Whirlwind
 * Earthshaking Strike/Shattered Ground. What's not to like about death by lava?
 * Horn of Valor/Fortifying Blast to give your whole party guard on hit
 

Reaver is a fun style, but it can tend to get dominated with Dragon Rage as opposed to vanilla 2H skills. That is partly just because the 2H tree isn't that great sadly, not that I am trying to dissuade anyone from that style since I prefer 2H in DAI and DAO.

2H Templar fun as well if you want something that plays a little more like a traditional 2H with a few "bonus powers."

As far as boring goes, in DAO I couldn't consider it more boring than a rogue given that warrior had access to all the same melee or ranged trees that rogue could access plus 2H. 2H incidentally was my favorite class and style in DAO as well. For Inquisition, I tend to find archer rogues the most boring. Can be saved with Artificer though or maybe heavy investment in sabotage and subterfuge.

I totally agree with "Capn 233".

Reaver is the way to go for hack and slash combat style, but can become a boring trap spaming dragon rage non stop.
the alternative is to forbidd yourself the dragonrage ability except to get under the 50% health in order to benefefit from your passives and your enhanced belt of emergency. Then just use your regular favorite warrior slills like combat roll, grapplin chain, charging bull and mighty blow for example and use the most efficient and funniest masterwork material (like walking bomb or hidden blades) to get epic battles.
And as others told you already, templar is not a bad choice at all because you can adapt to many situations and buff your entire party. Spell purge and wrath of heaven are really usefull when activated wisely.

Anyway have fun mate!