Good to see another Bloodbound player!
I'm still working on my collection, so I've yet to actually play a game. But, from what I've read, you're off to a great start.
The Warshrine is just fast enough to keep up with the Skullcrushers, if you're looking to synergize it's abilities with them.
Groups of multi-wound models are, I hear, very good, even without the wound allocation shenanigans some have advocated, so the Skullcrushers should be survivable.
Depending on your budget, the Blood Reavers can be had at about $1 each on Ebay, and with an equally cheap Bloodsecrator and the Warshrine you already have they go from being very mediocre to rather threatening.
When you're done making your army, be sure to post some pictures in the
AOS pictures thread, I'd love to see it. And, in the meantime, I'll keep plugging away at mine, and hopefully one day actually get to play this game.