Feel sad for the BoC and BS players, really horrible news. I actually own quite a few beastmen from WHFB days and I'd considered re-basing them onto rounds, glad I didn't now...
As someone who got into Stormcast with the Soulwars box I'm pretty gutted about the Sacrosanct deletion. In any fantasy setting I've always been drawn to the Warrior/Mage hybrid / Paladin archetype. In any MMORPG I've played that's what I've been drawn to for example. The Sacrosanct models gave me a way of playing out that interest on the tabletop. I understand I can proxy my Sequitors as Liberators but to me that's not the point as I've lost the narrative/playstyle that interested me. I wouldn't have minded if they'd said they were slimming down the range of Sacrosanct and updating them to Thunderstrike. It's the fact that archetype is now completely gone from the tabletop. Sad times.