You mean if you build all your passives and gear around fury gen, slot abilities that give fury, and then only use the most efficient non-spammable and most boring spender (rend build) and only fight highly concentrated packs and never bosses/elites, it doesn't seem like a big deal? Subscribed to your newsletter etc.
Using just your primary builder is -awful-. bash bash bash bash bash bash bash bash bash HOTA HOTA bash bash bash etc. So you have to add in weak fury passives (losing defense/dps/healing), slot abilities you otherwise wouldn't use because they are terrible (warcry w/charge), forget using any rune on your builder other than +fury gen (which are all fire based), etc.
My old build used both rend and HOTA to cover all the bases. It was a great mix of dotting trash + hammering down tougher enemies. You can forget that now. It's all about using one attack while everything else is for feeding it fury. I've been swapping back and forth between a rend/physical build and hota/fire. Both have pretty severe drawbacks. Luckily right now I'm not locked into anything because I have no synergy bonuses but eventually I'll have to pick one and gear for it.
Anyway, I think what barb lovers should be griping for is buffing fury builders to match the +fury runes, and then turn those runes into something more interesting. Because it really fucks up synergy options when the clear obvious best choice are runes that buff fury gen. And that's such a boring choice.