Anyway to make sacresants good yet?

I was just wondering if anyone knew of any good ways to run sacresants? They're one of my favorite units in sisters but sadly all I'm seeing is that they aren't very good, most advice I see is running them with a hospitaller. Are there any good combos with other character units or is hospitaller truly the best way to run them? Also which weapon options should I go with?

Any advice on how to list build and play with them would be more than appreciated!