The 12/6/2 build that I've proposed else where is using Stalwart Defender rather than Kensei. Still, of the 3 or so alternatives to the Exploiter that are readily apparent (6-7 monk, rogue or stalwart defender) I'd rate the fighter the lowest of the 3 (though SDI will become better in U14 for this level split).
Yeah it is difficult to know what things will be like after the Enh pass.
You had a Ranger 13 multi build earlier in this thread. Do you know what I think the best thing about a Ranger is? Answer: It can be a self-healing melee. And you really want Ranger 14 for that. Preferably with a metamagic like Maximize.
One combo to investigate would be:
15 Ranger/4 Fighter/1 Rogue (2 level 4 spells (CSW and FoM), Fighter Haste Boost II, extra Fighter feats, and of course UMD and 1d6 SA)
AFter the enhancement change hits, all bets are off. Our builds might be totally different then.
Khyber:Greenberry, Jemric, Qashta, Leuk, Thurradal + many others
I got a tempest 3 18/2 ramger/fighter and really happy with him. he needs a lot of equipment love, but he's handlying really well in epics now
http://my.ddo.com/character/thelanis/astankhamun/
He's good dps, good survivability. Lots of versatility. Since racial PrE are on the horizon, i didn't go ftr 6 for SD1 HP boost. With the changes ahead, I wouldn't go for a niche build in the current system, but try for a solid versatility build that can adapt to whatever is being cooked up in Lama Land.
Cheers
Ast