[Autumn]

I personally think due to dark resistance there's plenty of methods in mitigating the damage of Retaliate itself, it takes a long time to build up to, especially if you're using Bellowing Stag as well which consumes a VERY large portion of your rage energy.

The biggest offender when Matador was too strong was when Bellowing Stag had no cooldown and could be spammed ad infinitum, ever since that was bit in the bud the only really strong matadors historically so far have been those that can mitigate crit effects, otherwise ignoring armor is how you get past Matador, or dealing magic damage which seemingly a lot of physical damage classes have access to these days.

Some setups are running methods in reducing darkness resistance but that can be counterplayed as well with the usage of effects like Negotiate/Cleanse Potion/Wash Away.

Otherwise Matador's biggest hurdle is getting over evasive builds, due to the nature of it being a tank buster mostly its not actually that effective against dodgy people, and will often not out-damage them due to practically permanent 30% reduction, which reduces its effectiveness to be basically below basic abilities.

As a side note, the only change I can see happening for Bellowing stag is making its cinders not 75% Fire ATK