The nerf to SnD is pretty small tbh due to its 3 hits being stronger than before.
What I find to be the main problems are the current Focus implementation, both Transfix and Pain Lance being 2 sec cast time and Pain Lance having half of its initial damage moved to the dot.
Keeper alphas were never the easiest to do with reaver before, now its 2 seconds longer to do, requires Cleave being used first, 2 weaker perks and due to focus pretty much tells who you are fighting that a perk chain is coming.
Basically make Transfix+Pain Lance both 1 sec cast(important), change the damage on Pain Lance back to before 18.7(important), either make Slice n Dice 4 hits or slightly stronger 3 hits(less important) and make Focus a 1 hour+
non-removable buff that cant be refreshed or overwritten with other focuses(very important).