I see many suggestions on San’Layn – some of them are complaints, but i loved this Hero Spec after I became accustomed to its rotation. Spamming Vampiric Strike feels good once you have enough haste, 2 million+ Infliction of Sorrow finisher after a perfectly-executed burst window is just amazing. The only thing they need to redesign is to merge blood beast with dark transformation.
The Blood is Life
At current state spawning a Blood Beast must pass 2 low-rng checks most of a time. You can’t control its spawn, you can’t control its positioning nor align it with burst windows, so it does no damage, you cant even say it actually did something. It just looks goofy when it finnaly got summoned on last Vampiric Strike and now runs aside your (same model but different size and color) Monstrosity out of combat. Sometimes accompanied with Abomination. We have a summon-oriented RoTA hero tree for that.
Dark transformation
Your main rotation switcher actually doing nothing related to San’Layn fantasy. You press it, then you start to spam the Vampiric Strike.
Why not transform your ghoul into Blood Beast?
Transforming your main pet into Blood Beast with its juicy blood explosion instead of regular Monstrosity will announce to player that your dark transformation made you a blood beast along with your ghoul. You start to stack unholy damage with a flurry of Vampiric Strikes. You empower it with Ghoulish Frenzy. You extend its duration with Eternal Agony. BOOM — feel the Power on that transformation end explosion. Finish it with massive Infliction of Sorrow disease consumption afterwards. Repeat.
Make Blood is Life talent transform your ghoul into Blood Beast instead of summoning proc of a Vampire Strikes procs. Your beast related hero-talent column now functioning properly.