Me too. Javicia Leslie herself sounds awesome, but every other character and every storyline is so tied to Kate Kane herself, not to Batwoman, that I have no idea how this is going to work. Part of me wonders if Ryan Wilder will only be Batwoman for a while... if Alice will have a gravely injured Kate off somewhere captive/recuperating and she'll come back later, all healed up with a new face. Ryan Wilder could stick around as a main cast member, just not as Batwoman (perhaps as another recognizable comic book heroine -- I'm still holding out hope that Ryan Wilder is an alias). The showrunner has been clear that she doesn't want to kill off Kate Kane, but I don't know if that's because she doesn't want to add to the dead TV lesbian count or because she plans to bring the character back.
I guess we'll just have to wait and see how it pans out. I'll watch at least for a while, regardless, and I hope it's just as good as, or better than, season one.