the path to doppel is good. but there some skills need to be fixed.
It is based on my opinion.
Rank1 : well its your personal interest to have a skill like that, but for me, i would go to Bash5, GungHo5, Concentrate4 and PainBarrier1. You can benefit more if you put the 4 points in Concentrate rather than maxing PainBarrier, it only adds seconds per level. level 1 is enough
Rank2: Drop Crown for CrossGuard.
Rank3: Drop Embowel for HelmChopper. Hey, you dont want stun? HelmChopper gives stun!
Rank 4: You forgot to max SEISM! its the most important skill in Barbarian bro!!! goodjob at maxing cleave, but i dont aggree maxing stomping kick, i would rather have the 5 skillpoints in warcry or max helm chopper.
Rank 5: in here, you’re trying to get all skill. here’s the rule, it is much better to have few high level skill rather than many low level skill. i read it somewhere here, but if you try to understand it, its true. so, if i were you, in this rank… Max Frenzy and Max Seism, this is your recipe for destruction, then the other 5 skillpoint, you could invest on POUNCING, or cleave or helm chopper. i personally dont like Giant Swing.
Rank 6: Deeds of valor is a must have, It synergizes with Frenzy, so max Deeds, then the rest is up to you.
Overall, you need to rework your skill, you just missed seism, frenzy, deeds of valor. they are what makes barbarian burst. you must understand the skills. and dont try to get everything! Remember its much better to have few HIGH level skills rather than many LOW level skills.
you could check mine: http://www.tosbase.com/tools/skill-simulator/build/gepytgj5yg/
i repeat, everything i said here is based on my opinion and on what i observed. im not a ICBT1 player, so i will test my build in upcoming iCBT2.