I'm not sure if it will freeze stuff around you "quite often" since i don't know what is the proc coefficient of rend is but i'm assuiming that it's quite low because such is the nature of AOE spells usually...
Let's hope that by the time this set becomes available, Blizzard will work on the barb's fury generation. Because as of now, you basically have 3 ways to have max fury almost all the time:
1. Leapquake. The fury generated from leap + the earthen might passive. Nuff said.
2. Raekor. FC fury generation is ridiculous. One charge on a group of mobs = instant full fury.
3. Lightning WW. Full IK with lightning ww + cota with the fury rune.
All the options listed above are very limiting in a sense that they determine what type of build you are going to use and there's not much space for customization. Unlike the crusader's condition with the Akkan set where it helps you sustain resource overall without any direct relation to the specific build you are running. Now, Blizzard have stated in the latest Blizzcon that they will not be making sets like Akkan in the future and that they prefer sets that determine a playstyle and skills used. the problem i see here is, how exactly do they expect us to keep fury up with WW + Rend with cold runes for an example? No one is going to use Bash instigation or whatever unless they seriously buff all primary generator attacks.
There is an option to use FC with the stamina rune but how effective would that be? Also, the standard shouts + stomp will not be enough if you are not running unforgiving or IK 3P... and running those will gimp your potential DPS... Basically, to get enough fury we need to give up on a shitload of dps which totally sucks.
And then they go on making 6p sets like total idiots... you can't combine this shit with mote / raekor nothing... The only thing you can do is IK weapon + belt and then you give up on Lamentation and the IK weapon is technically crap in relation to stuff like furnace or hell, even Wrath of the bone king for an example... (check the wotbk i'm using on my cold eq barb http://i.imgur.com/iVBQp7Q.png) Imagine an ancient version of this... rough calculation: ~4.8k dps
So yeah, the only real option i'm seeing is as you've mentioned, using FC stamina in between WW+Rends and with warcry. Maybe even add Unforgiving passive but that really needs to be tested. Did i mention that 6p sets are stupid?
I'm not sure if it will freeze stuff around you "quite often" since i don't know what is the proc coefficient of rend is but i'm assuiming that it's quite low because such is the nature of AOE spells usually...
1. Leapquake. The fury generated from leap + the earthen might passive. Nuff said.
2. Raekor. FC fury generation is ridiculous. One charge on a group of mobs = instant full fury.
3. Lightning WW. Full IK with lightning ww + cota with the fury rune.
All the options listed above are very limiting in a sense that they determine what type of build you are going to use and there's not much space for customization. Unlike the crusader's condition with the Akkan set where it helps you sustain resource overall without any direct relation to the specific build you are running. Now, Blizzard have stated in the latest Blizzcon that they will not be making sets like Akkan in the future and that they prefer sets that determine a playstyle and skills used. the problem i see here is, how exactly do they expect us to keep fury up with WW + Rend with cold runes for an example? No one is going to use Bash instigation or whatever unless they seriously buff all primary generator attacks.
There is an option to use FC with the stamina rune but how effective would that be? Also, the standard shouts + stomp will not be enough if you are not running unforgiving or IK 3P... and running those will gimp your potential DPS... Basically, to get enough fury we need to give up on a shitload of dps which totally sucks.
And then they go on making 6p sets like total idiots... you can't combine this shit with mote / raekor nothing... The only thing you can do is IK weapon + belt and then you give up on Lamentation and the IK weapon is technically crap in relation to stuff like furnace or hell, even Wrath of the bone king for an example... (check the wotbk i'm using on my cold eq barb http://i.imgur.com/iVBQp7Q.png) Imagine an ancient version of this... rough calculation: ~4.8k dps
So yeah, the only real option i'm seeing is as you've mentioned, using FC stamina in between WW+Rends and with warcry. Maybe even add Unforgiving passive but that really needs to be tested. Did i mention that 6p sets are stupid?