Union Jack technically appeared last issue and considering Dracula keeps assuming that his feelings for Spitfire will effect his ability to team with Blade, something may come up there. It is curious that Cornell decided not to include Baroness Blood as well. She was the one who turned Kenneth into Baron Blood in the first place, and wasn't staked (she also battled Union Jack, naturally). Lilith and Capt. Fate are fine, though, even if neither have an obvious connection to Dracula than Baroness Blood would. Although that is likely the point.
The next issue or so is due to have a guest stint with Motormouth and Killpower; they've been in limbo since forever. I'm sure Union Jack will get a moment of action. They may be setting up Spitfire to have to kill her own son for her country, though. Or for Blade to do it, since Captain Britain may be the one to tackle Dracula, since he is the title hero.