Expanding on the Hellforged Warband battleforce?

Hello all! I’m not new to 40k, but pretty new to chaos marines / iron warriors. Right now I’m finishing up the hellforged warband battleforce and I’m wondering what would be a good direction to expand on it. I definitely want to get Kravek and something for him to lead, but I’m not sure what else beyond that. I know 11th is coming soon, but it looks like present datasheets will carry over if I’m understanding those articles correctly. Any help is appreciated.