Do you even realize how hard those fire chains hit from the Maximus proc? It does more damage than any of the fury generators. I was using Cleave as my fury generator and even with 28% +cleave damage, +370%ish crit damage, +77% fire damage, 25% Rampage Str bonus, my cleave was doing about 3.5-4.0 million per hit.
My fire chains proc, on average, 5 million damage per trick and ticks faster than I can Cleave. Maybe with Bash + Punish, I could do an equivalent amount of damage, or perhaps Frenzy + Maniac. I've had Fire Chains as high as 12 million damage per tick - the proc damage is based on when the demon pops out and how buffed you are when he does appear (i.e. Rampage bonus, shrines, etc).
Yeah, no. I don't need a fury generator if the chains are proc'd. I can afford to stand around for a second or two if charge is on cooldown.
Yeah, Maximus is no joke. It hits hard. It hits fast. It negates needing to have a fury generator. On top of having the cost reduction on HOTA, Furious Charge/War Cry as Fury generators, and fury generation from globes with the Reaper Wraps, it's good stuff.